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If they slowly use up their water, the body should become increasingly dehydrated, and if they begin with a store of water, this should be evident from an initial high water content.. Re[r]
(1)Mock test 2012 I Choose the word whose stress is differently
1 A surpass B command C universal D facsimile A fortunate B recommend C disappear D entertain A mathematics B statistics C academy D mechanic A inspire B instruct C intensive D instrument
5 A decay B finish C committee D home-based
II Mark your letter A,B,C,D on your answer sheet to indicate the answer to the following questions. storm that the city was virtually destroyed.…
A Such was a B Such a great C So a great D So was great a 7.In the of proof , police could not take action against the man.…
A lack B shortage C loss D absence 8.I had to pay on a carpet I bought in through Customs today A taxes B rates C fines D duty
9 It is very rude to point……… … someone in many cultures A at B to C out D off 10 I am from Toronto - oh! I ve never ever been there“ ” “ ’ ………”
A What is it? C How is it? B What is it like? D How does it like? 11.If you want a good flat in London, you have to pay through the _ for it
A nose B mouth C ear D lip
12 The bus was so late reaching the station that I missed my train
A already B almost C entirely D soon
13 Tony ’s boss doesn ’t want him to a habit of using the office phone for person calls
A B have C make D increase 14 Nice day, isn t it? “ ’ ” ………
A I like it very much B You must say that again C It ’s certain D Yes, lovely 15.- , May I use your pen? -“ “ ………
A Feel free C Nothing at all B Forget it D No problem 16 She moved to such a remote region because she needed a change of̉
A scene B situation C place D heart 17 ., the seeds of the Kentucky coffee plant are poisonous
A Until they have been cooked B Cooking them C They have been cooked D Cooked until 18 Avril wore the pink dress ………preference……….the blue one
A in/of B with/to C in/to D by/to
19 ’Do you like that advanced training course you ’re taking, James? ’ ’ ’ ’
A By and large, yes B No, not everyone C Not me I’m still waiting D No, thanks 20.’A :Are you going to the match? -B: ……… I am!
A You bet B You think C All right D Agree 21 How long did the of the murderer last?
a process b trial c charge d conviction
22 The Prime Minister has an intimate knowledge of laws for he was a lawyer before Intimate means……
A thorough B general C close D familiar
23.No one determined the cause of her disappearance Determined means……
A knew B conditioned C found out D discover 24 The doctor took one look at me and said that I was overweight.…
A slightly B accurately C certainly D continuously 25 She put a (well-) ……… case for increasing the fees
A reason B reasoned C reasonable D reasonably 26 _, I not consider this composition acceptable
A Because of so many errors B Because of there were so many errors C Due to there were so much errors D Although so many errors
27 To relieve pain caused by severe burns, prevent infection, and treat for shock,…………
A taking immediate steps B to take immediate steps C taken steps immediately D take immediate steps 28 The witness s account was not ’ ……… with the facts
A match B reliable C consistent D confirmed 29 , his television would not be so loud
A Were Rafael studying B Unless Rafael were studying C Had Rafael being studied D If Rafael studies
30 Flower oil is ……… of the ingredients used in making perfume
A among the most expensive B among most expensive C being most expensive D most expensive 31 For many years people have wondered …… exists elsewhere in the universe
A that life B life which C whether life D life as it 32 The Consumer Price Index lists ……
A how much costs every car B how much every car costs C how much does every car cost D how much are every car cost
33 Not until a monkey is several years old …… to exhibit signs of independence from its mother A its begins B does it begin C and begin D beginning 34 All his plan to move to California fell
A down B through C away D about
35.I suggest you talk the matter with your boss first of all
A about B into C to D over III Reading
Gelatin is a protein substance that comes from the skins and bones of animals Most people know it as the substance used to make a jellylike salad or dessert Not only is it useful in making these foods ,but it is also beneficial to the
consumer because of its high protein content Gelatin is also commonly used in the photographic industry and in making medicinal capsules
(2)placed in distilled water , heated to over 90oF for a few hours ,placed in fresh distilled water ,and then heated again at a
little over 100oF A fluid forms from this heating ,and it is concentrated ,chilled ,and sliced finally ,it is dried and ground
.In its final form ,gelatin is white ,tasteless ,and odorless 36.It can be inferred from this reading passage that
A one could easily make gelatin at home B it is necessary to add minerals to the gelatin
C fat aids in making good gelatin
D gelatin is useful for elderly and ill people because it is easy to chew and high in protein 37.The word "fluid "is closest in meaning to
A liquid B distilled water C hard material D substance
38.Which of the following is true
A gelatin made from skin is produced in the same way as that made from bones B grease probably does not aid in producing gelatin
C the chemical used in making gelatin comes off the surface of the bones by rinsing with water D when the gelatin is dried ,it is in powder form
39.Which of the following would be the best title for this passage
A The Process of Making Gelatin B Protein Foods C Uses for Bones D.A great Dessert
40.All of the following industries are mentioned as using gelatin EXCEPT
A the lawn care industry B the photographic industry
C the pharmaceutical industry D the food industry
41.According to the passage ,why is eating gelatin healthy ?
A it does not damage the teeth B It is low fat C It is protein rich D It has no animal byproducts 42.The word "ground " is closest in meaning to
A refrigerated B pulverized C purified D dirtied
43.Why would gelatin be useful for medicine capsules?
A It tastes good B It is a natural substance that is easy to digest
C It is easy to make and thus inexpensive D It won't melt at high temperatures
44 The word "that "refers to A gelatin B processing C skin D bones
IV Reading
While most desert animals will drink water if confronted with it, for many of them the opportunity never comes Yet all living things must have water, or they will expire The herbivores find it in desert plants The carnivores slake their thirst with the flesh and blood of living prey One of the most remarkable adjustments, however, has been made by the tiny kangaroo rat, who not only lives without drinking but subsists on a diet of dry seeds containing about 5% free water Like other animals, he has the ability to manufacture water in his body by a metabolic conversion of carbohydrates But he is
notable for the parsimony with which he conserves his small supply by every possible means, expending only minuscule
amounts in his excreta and through evaporation from his respiratory tract
Investigation into how the kangaroo rat can live without drinking water has involved various experiments with these small
animals Could kangaroo rats somehow store water in their bodies and slowly utilize these resources in the long periods
when no free water is available from dew or rain? The simplest way to settle this question was to determine the total water content in the animals to see if it decreases as they are kept for long periods on a dry diet If they slowly use up their water, the body should become increasingly dehydrated, and if they begin with a store of water, this should be evident from an initial high water content Results of such experiments with kangaroo rats on dry diets for more than weeks showed that the rats maintained their body weight There was no trend toward a decrease in water content during the long period of water deprivation When the kangaroo rats were given free access to water, they did not drink water They did nibble on small pieces of watermelon, but this did not change appreciably the water content in their bodies, which remained at 66.3 to 67.2 during this period
This is very close to the water content of dry-fed animals (66.5), and the availability of free water, therefore, did not lead to any "storage" that could be meaningful as a water reserve This makes it reasonable to conclude that physiological
storage of water is not a factor in the kangaroo rat's ability to live on dry food
Top of Form
45- What is the topic of this passage?
A Kangaroo rats B-Water in the desert C Desert life D Physiological experiments 46 - The word "expire" is closest in meaning to
A.become ill B die C shrink D dehydrate 47- Which of the following is NOT a source of water for the desert animals?
A Desert plants B Metabolic conversion of carbohydrates in the body C The blood of other animals D Streams
48 - The word "it" refers to
A a living thing B the desert C the opportunity D water 49- The author states that the kangaroo rat is known for all of the following EXCEPT
A the economy with which it uses available water B living without drinking water
C breathing slowly and infrequently D manufacturing water internally
50 - The word "parsimony" is closest in meaning to
A intelligence B desire C frugality D skill 51 - It is implied by the author that desert animals can exist with little or no water because of
A less need for water than other animals B many opportunities for them to find water
C their ability to eat plants D their ability to adjust to the desert environment
52 - The word "deprivation" is closest in meaning to
(3).A kangaroo rats store water for use during dry periods B kangaroo rats took advantage of free access to water C there was no significant change in body weight due to lack of water or accessibility to water
D a dry diet seems detrimental to the kangaroo rat's health
54.The word access in the second paragraph is closest in meaning to“ ” …
A right B method C opportunity D entrance V Mistakes
55 (A) Because of the movement of a glacier, (B) the form (C) of the Great lakes was very (D) slow
56 Some (A) heating devices convert (B) chemist energy like (C) that found in wood and coal (D) into heat energy 59 His father(A) does not approve of(B) him to go to the banquet (C)without dressing(D) formally
58 Although the Red Cross (A) accepts blood from most donors, the nurses will not (B) leave you (C) give blood if you have just (D) had a cold
59 My doctor urges that I am stopping smoking immediately A B C D
60 That novel is definitely a dense-packed narrative, but one which requires a vast knowledge of A B C
cultural background or an excellent encyclopedia D
VI Choose the word that fits each space
At 19, Ben Way is already a millionaire, and one of a growing number of teenagers who have(61)……… their fortune through the Internet (62)………… makes Ben s story all the more remarkable is that he is dyslexic, and was told by’ teachers at his junior school that he would never be able to read or write(63)……… “ I wanted to prove them (64)… says Ben, creator and director of Waysearch, a net search engine which can be used to find goods in online ……… ”
shopping malls
When he was eight , his local authorities provided him with a PC to help with schoolwork Although he was (65)……… to read the manuals, he had a natural ability with the computer, and encouraged by his father, he soon began (66)… …… people £10 an hour for his knowledge and skill At the age of 15 he (67)……… up his own computer consultancy, Quad Computer, which he ran from his bedroom Two years later he left school to devote all his time to business
’ By the time the company had grown and I needed to take on a (68)…… of employees to help me, says Ben That” “ enabled me to start doing business with bigger companies It was his ability to consistently(69)“ ……… difficult challenges that led him to win the Young Entrepreneur of the Year award in the same year that he formed Waysearch , and he has recently singed a deal (70)… …… £25 million with a private investment company, which will finance his search engine
61 A taken B made C put D done
62 A This B That C Something D What
63 A absolutely B totally C properly D thoroughly
64 A wrong B false C untrue D unfair
65 A impossible B incapable C disabled D unable
66 A owing B charging C lending D borrowing
67 A put B ran C made D set
68 A couple B few C little D deal
69 A overcome B overlook C overtake D overdo
70 A valuable B estimated C priced D worth
VII Choose the sentencethat is nearest in meaning to the given one 71 ’When I met my long ’lost brother, I was at a loss for words ’’
A When the speaker met his brother, he was puzzled about what to say B When the speaker met his brother, he had much to say
C When the speaker met his brother, he refused to say anything D When the speaker met his brother, he had nothing pleasant to say 72 She only realized the depth of his feelings when they got married
A Only when they got married she realized the depth of his feelings B Only when they got married she didn't realize the depth of his feelings C Only before they got married did she realize the depth of his feelings D Only when they got married did she realize the depth of his feelings 73 The result of the match was never in doubt
A At no time was the result of the match in doubt B At all time was the result of the match in doubt C The result of the match wasn't in no doubt at all D We all never believed in the result of the match 74 It's an undeniable fact that children watch too much TV
A It's obviously that children spend much time watching TV.B It's undeniable that children don't watch TV enough C It can't be denied that children watch too many TV programes.D It's undeniable that too many children watch TV 75 He felt very tired However, he was determined to continue to climb up the mountain
A He felt so tired that he was determined to continue to climb up the mountain B Feeling so tired, he was determined to continue to climb up the mountain C Tired as he might feel, he was determined to continue to climb up the mountain D As the result of his tiredness, he was determined to continue to climb up the mountain VIII Choose the best sentence (A, B, C or D) that is best made from the given prompts 76 Committee members/ resent/ treat/ that
A The committee members resented to treat as that B The committee members resented to be treated as that C The committee members resented to treat like that D The committee members resented being treated like that 77 regard/ your application/ regret/ inform/ vacancy/ already/ fill
A As regards your application, I regret informing you that the vacancy has already been filled B As regards your application, I regret to inform you that the vacancy has already been filled C As regards your application, I regret to inform you that the vacancy has already filled
D As regards to your application, I regret to inform you that the vacancy has already been filled 78 addition/ have/ considerable experience/ new/ secretary/ bilingual
(4)79 big / problem / face / youth / employ/
A One of the biggest problems faced by the youth of today is unemployment
B One big problem facing the youth today is unemployed.C Big problem faced by the youth today is unemployment D One of the biggest problem facing the youth today is unemployment
80 Laser / be / great use / many science, / especially / medicine // A Lasers are the great use, and many sciences, especially medicine B Lasers are of great use in many sciences, especially in medicine C The great use of lasers is in medicine, especially for many sciences
D Lasers are in great use, according to many scientists, especially in medicine
TEST 16 I Stress
1 A surpass B command C universal D facsimile
2 A fortunate B recommend C disappear D entertain
3 A mathematics B statistics C academy D mechanic
4 A inspire B instruct C intensive D instrument
5 A decay B finish C committee D home-based
II Mark your letter A,B,C,D on your answer sheet to indicate the answer to the following questions. storm that the city was virtually destroyed.…
A Such was a B Such a great C So a great D So was great a
7.In the of proof , police could not take action against the man.… A lack B shortage C loss D absence 8.I had to pay on a carpet I bought in through Customs today A taxes B rates C fines D duty It is very rude to point……… … someone in many cultures
A at B to C out D off
10 I am from Toronto - oh! I ve never ever been there“ ” “ ’ ………”
A What is it? C How is it? B What is it like? D How does it like?
11.If you want a good flat in London, you have to pay through the _ for it
A nose B mouth C ear D lip
12 The bus was so late reaching the station that I missed my train
A already B almost C entirely D soon
13 Tony’s boss doesn’t want him to a habit of using the office phone for person calls A B have C make D increase 14 Nice day, isn t it? “ ’ ” ………
A I like it very much B You must say that again C It’s certain D Yes, lovely. 15.- May I use your pen? -“ “ ………
A Feel free C Nothing at all B Forget it D No problem 16 She moved to such a remote region because she needed a change of̉
A scene B situation C place D heart
17 ., the seeds of the Kentucky coffee plant are poisonous
A Until they have been cooked B Cooking them C They have been cooked D Cooked until
18 Avril wore the pink dress ………preference……….the blue one
A in/of B with/to C in/to D by/to
19 Do you like that advanced training course you re taking, James? ’ “ ’ ” “ ”
A By and large, yes B No, not everyone C Not me I’m still waiting D No, thanks. 20.’A :Are you going to the match? -B: ……… I am!
A You bet B You think C All right D Agree 21 How long did the of the murderer last?
a process b trial c charge d conviction
22 The Prime Minister has an intimate knowledge of laws for he was a lawyer before Intimate means……
A thorough B general C close D familiar
23.No one determined the cause of her disappearance Determined means……
A knew B conditioned C found out D discover
24 The doctor took one look at me and said that I was overweight.…
A slightly B accurately C certainly D continuously
25 She put a (well-) ……… case for increasing the fees
A reason B reasoned C reasonable D reasonably
26 _, I not consider this composition acceptable
A Because of so many errors B Because of there were so many errors
C Due to there were so much errors D Although so many errors
(5)A taking immediate steps B to take immediate steps
C taken steps immediately D take immediate steps
28 The witness s account was not ’ ……… with the facts
A match B reliable C consistent D confirmed
29 , his television would not be so loud
A Were Rafael studying B Unless Rafael were studying
C Had Rafael being studied D.If Rafael studies
30 Flower oil is ……… of the ingredients used in making perfume
A among the most expensive B among most expensive
C being most expensive D most expensive
31 For many years people have wondered …… exists elsewhere in the universe
A that life B life which C whether life D life as it
32 The Consumer Price Index lists ……
A how much costs every car B how much every car costs
C how much does every car cost D how much are every car cost
33 Not until a monkey is several years old …… to exhibit signs of independence from its mother
A its begins B does it begin C and begin D beginning
34 All his plan to move to California fell
A down B through C away D about
35.I suggest you talk the matter with your boss first of all
A about B into C to D over
III Reading
Gelatin is a protein substance that comes from the skins and bones of animals Most people know it as the substance used to make a jellylike salad or dessert Not only is it useful in making these foods ,but it is also beneficial to the
consumer because of its high protein content Gelatin is also commonly used in the photographic industry and in making medicinal capsules
The process for producing gelatin is a long and complex one In the processing of gelatin made from bones (which varies slightly from that of gelatin made from skin ),the grease first must be eliminated Then the bones are soaked in a solution of hydrochloric acid in order to rid them of minerals and washed several times in water Next ,the bones are placed in distilled water , heated to over 90oF for a few hours ,placed in fresh distilled water ,and then heated again at a
little over 100oF A fluid forms from this heating ,and it is concentrated ,chilled ,and sliced finally ,it is dried and ground
.In its final form ,gelatin is white ,tasteless ,and odorless 36.It can be inferred from this reading passage that
A one could easily make gelatin at home B it is necessary to add minerals to the gelatin C fat aids in making good gelatin
D gelatin is useful for elderly and ill people because it is easy to chew and high in protein 37.The word "fluid "is closest in meaning to
A liquid B distilled water C hard material D substance 38.Which of the following is true
A gelatin made from skin is produced in the same way as that made from bones B grease probably does not aid in producing gelatin
C the chemical used in making gelatin comes off the surface of the bones by rinsing with water D when the gelatin is dried ,it is in powder form
39.Which of the following would be the best title for this passage
A The Process of Making Gelatin B Protein Foods C Uses for Bones D.A great Dessert 40.All of the following industries are mentioned as using gelatin EXCEPT
A the lawn care industry B the photographic industry C the pharmaceutical industry D the food industry
41.According to the passage ,why is eating gelatin healthy ?
A it does not damage the teeth B It is low fat C It is protein rich D It has no animal byproducts 42.The word "ground " is closest in meaning to
A refrigerated B pulverized C purified D dirtied 43.Why would gelatin be useful for medicine capsules?
A It tastes good B It is a natural substance that is easy to digest
C It is easy to make and thus inexpensive D It won't melt at high temperatures 44 The word "that "refers to A gelatin B processing C skin D bones
IV Reading
While most desert animals will drink water if confronted with it, for many of them the opportunity never comes Yet all living things must have water, or they will expire The herbivores find it in desert plants The carnivores slake their thirst with the flesh and blood of living prey One of the most remarkable adjustments, however, has been made by the tiny kangaroo rat, who not only lives without drinking but subsists on a diet of dry seeds containing about 5% free water Like other animals, he has the ability to manufacture water in his body by a metabolic conversion of carbohydrates But he is
notable for the parsimony with which he conserves his small supply by every possible means, expending only minuscule
amounts in his excreta and through evaporation from his respiratory tract
Investigation into how the kangaroo rat can live without drinking water has involved various experiments with these small
animals Could kangaroo rats somehow store water in their bodies and slowly utilize these resources in the long periods
(6)nibble on small pieces of watermelon, but this did not change appreciably the water content in their bodies, which remained at 66.3 to 67.2 during this period
This is very close to the water content of dry-fed animals (66.5), and the availability of free water, therefore, did not lead to any "storage" that could be meaningful as a water reserve This makes it reasonable to conclude that physiological
storage of water is not a factor in the kangaroo rat's ability to live on dry food
Top of Form
45- What is the topic of this passage?
A Kangaroo rats B-Water in the desert C Desert life D Physiological experiments 46 - The word "expire" is closest in meaning to
A.become ill B die C shrink D dehydrate 47- Which of the following is NOT a source of water for the desert animals?
A Desert plants B Metabolic conversion of carbohydrates in the body C The blood of other animals D Streams
48 - The word "it" refers to
A a living thing B the desert C the opportunity D water 49- The author states that the kangaroo rat is known for all of the following EXCEPT
A the economy with which it uses available water B living without drinking water C breathing slowly and infrequently D manufacturing water internally 50 - The word "parsimony" is closest in meaning to
A intelligence B desire C frugality D skill 51 - It is implied by the author that desert animals can exist with little or no water because of A less need for water than other animals B many opportunities for them to find water
C their ability to eat plants D their ability to adjust to the desert environment 52 - The word "deprivation" is closest in meaning to
A preservation B renewal C examination D withholding 53- According to the passage, the results of the experiments with kangaroo rats showed that
.A kangaroo rats store water for use during dry periods B kangaroo rats took advantage of free access to water C there was no significant change in body weight due to lack of water or accessibility to water
D a dry diet seems detrimental to the kangaroo rat's health
54.The word access in the second paragraph is closest in meaning to“ ”
A right B method C opportunity D entrance V Mistakes
55 (A) Because of the movement of a glacier, (B) the form (C) of the Great lakes was very (D) slow
56 Some (A) heating devices convert (B) chemist energy like (C) that found in wood and coal (D) into heat energy
59 His father(A) does not approve of(B) him to go to the banquet (C)without dressing(D) formally
58 Although the Red Cross (A) accepts blood from most donors, the nurses will not (B) leave you (C) give blood if you
have just (D) had a cold
59 My doctor urges that I am stopping smoking immediately A B C D
60 That novel is definitely a dense-packed narrative, but one which requires a vast knowledge of A B C
cultural background or an excellent encyclopedia D
VI Choose the word that fits each space
At 19, Ben Way is already a millionaire, and one of a growing number of teenagers who have(61)……… their fortune through the Internet (62)………… makes Ben s story all the more remarkable is that he is dyslexic, and was told by’ teachers at his junior school that he would never be able to read or write(63)……… “ I wanted to prove them (64)… says Ben, creator and director of Waysearch, a net search engine which can be used to find goods in online ……… ”
shopping malls
When he was eight , his local authorities provided him with a PC to help with schoolwork Although he was (65)……… to read the manuals, he had a natural ability with the computer, and encouraged by his father, he soon began (66)… …… people £10 an hour for his knowledge and skill At the age of 15 he (67)……… up his own computer consultancy, Quad Computer, which he ran from his bedroom Two years later he left school to devote all his time to business
’ By the time the company had grown and I needed to take on a (68)…… of employees to help me, says Ben That” “ enabled me to start doing business with bigger companies It was his ability to consistently(69)“ ……… difficult challenges that led him to win the Young Entrepreneur of the Year award in the same year that he formed Way search , and he has recently singed a deal (70)… …… £25 million with a private investment company, which will finance his search engine
61 A taken B made C put D done
62 A This B That C Something D What
63 A absolutely B totally C properly D thoroughly
64 A wrong B false C untrue D unfair
65 A impossible B incapable C disabled D unable
66 A owing B charging C lending D borrowing
67 A put B ran C made D set
68 A couple B few C little D deal
69 A overcome B overlook C overtake D overdo
70 A valuable B estimated C priced D worth
VII Choose the sentencethat is nearest in meaning to the given one 71.’When I met my long ’lost brother, I was at a loss for words.’’
A When the speaker met his brother, he was puzzled about what to say. B When the speaker met his brother, he had much to say
C When the speaker met his brother, he refused to say anything D When the speaker met his brother, he had nothing pleasant to say 72 She only realized the depth of his feelings when they got married
(7)D Only when they got married did she realize the depth of his feelings. 73 The result of the match was never in doubt
A At no time was the result of the match in doubt. B At all time was the result of the match in doubt C The result of the match wasn't in no doubt at all D We all never believed in the result of the match 74 It's an undeniable fact that children watch too much TV
A It's obviously that children spend much time watching TV.B It's undeniable that children don't watch TV enough. C It can't be denied that children watch too many TV programes.D It's undeniable that too many children watch TV 75 He felt very tired However, he was determined to continue to climb up the mountain
A He felt so tired that he was determined to continue to climb up the mountain B Feeling so tired, he was determined to continue to climb up the mountain
C Tired as he might feel, he was determined to continue to climb up the mountain. D As the result of his tiredness, he was determined to continue to climb up the mountain VIII Choose the best sentence (A, B, C or D) that is best made from the given prompts 76 Committee members/ resent/ treat/ that
A The committee members resented to treat as that B The committee members resented to be treated as that C The committee members resented to treat like that D The committee members resented being treated like that 77 regard/ your application/ regret/ inform/ vacancy/ already/ fill
A As regards your application, I regret informing you that the vacancy has already been filled. B As regards your application, I regret to inform you that the vacancy has already been filled. C As regards your application, I regret to inform you that the vacancy has already filled.
D As regards to your application, I regret to inform you that the vacancy has already been filled 78 addition/ have/ considerable experience/ new/ secretary/ bilingual
A In addition to have considerable experience, the new secretary is also bilingual. B In addition to having considerable experiences, the new secretary is also bilingual. C In addition to having considerable experience, the new secretary is also bilingual. D In addition to have considerable experiences the, new secretary is also bilingual. 79 big / problem / face / youth / employ/
A One of the biggest problems faced by the youth of today is unemployment. B One big problem facing the youth today is unemployed.
C Big problem faced by the youth today is unemployment.
D One of the biggest problem facing the youth today is unemployment. 80 Laser / be / great use / many science, / especially / medicine //
A Lasers are the great use, and many sciences, especially medicine. B Lasers are of great use in many sciences, especially in medicine. C The great use of lasers is in medicine, especially for many sciences.