The Sun may throw off huge amounts of gases in violent eruptions called nova explosions as it changes from a red giant to a white dwarf.. After billions of years as a white dwarf, the [r]
(1)Đề thi chọn đội tuyển học sinh giỏi lớp 12 SECTION ONE: Phonetics
Question 1: Choose the word whose underlined part is pronounced differently from others
A fond B off C follow D honey
A these B appear C wear D prepare
A though B enough C cough D rough
A storage B encourage C garage D shortage
A fat B any C land D band
Question Choose the word whose the main stress is placed differently from others:
6 A A evaporate B consulate C contemplate D coordinate A interrupt B interview C intervene D interstellar A continent B continue C contention D contain A overweight B overdevelop C overnight D overhead 10 A demonstration B vegetation C generation D attraction SECTION TWO GRAMMAR AND VOCABULARY (12 pts.)
Question Circle the letter of the best answer (5 pts.): Don’t be silly! That possibly be Madonna!
A mustn’t B shouldn’t C won’t D can’t
2 No sooner had we started the picnic the rain began pouring down!
A than B when C that D and
3 You really shouldn't buy that car I know the engine is fine, but most of the bodywork has been away by rust
A eaten B dissolved C crumbled D erased
4 Not only visit Japan but they plan to stop off in the USA as well?
A they plan to B they must C will they D are they paying I’ll hand over all my files to my assistant before I ………
A am leaving B leave C will leave D shall leave By the time Brown’s daughter graduates, retired
A he B he has C he’ll being D he’ll have
7 ……… you try, you can never get them all right
A How hard B However hard C For as hard as D So hard as On he had won, he jumped for joy
A telling B he was told C being told D having told earlier, I would have done it for you
A Had I known B If I knew C Did I know D By knowing
10 Conservationists are worried that many potentially valuable of plants and animals are threatened with extinction
A examples B brands C variations D species
11 He had an excellent grade in his examination _ the fact that he hadn't worked particularly hard
A in spite of B although C because of D on account of 12 It was in this house ………
A where I was born B in which I was born C that I was born D I was born in 13 Did the man by the committee accept the job?
A appointing B appointed C was appointed D to appoint 14 I have two horses ……… of them run very fast
A All B Each C Both D One
15 The child was told to for being rude to his uncle
A excuse B apologize C confess D pardon
16 “John found it difficult to adjust to Libya.”
“For one thing, ……… is a difficult language to learn.”
A Arabic B the Arabic C the language Arabic D Arabics language
17 Some of you may have already completed section one ………., you can go on to section two
A If so B If you C If you may D If not
(2)19 When his daughter returned after midnight for the third time, Henry decided to down the laws and refused to allow her out at all
A set B put C hand D lay
20 Now ' s a time to tell me you are going out this evening - I've spent the whole day preparing supper for you
A right B suitable C reasonable D fine
Question Use the proper tense/form of verbs in parentheses Write your answer in the space provided (2,5 pts.)
The world is getting warmer and the oceans are rising Why ……… this (1 happen) One answer is that it could simply be part of a natural process After all, there (2 be) ice ages and long periods of warmth, so we could just (3 experience) another warming trend This kind of answer (4 have) more supporters a few years ago What scientists now (5 believe) is that human activity is the cause For more than two hundred years, human ……… gradually (6 change) the atmosphere, mainly as a result of industrial pollution We (7 create) an atmosphere around the earth that, like a giant glass container, (8 let) heat from the sun through and then (9. hold) it in ……… temperatures and sea levels (10 keep) rising? The general answer is unfortunately yes
Question Read the text below Use the words given in capitals at the end of each line to form a word that fits in the space in the same line.(2,5 pts)
One thing I know is that I wouldn't like to have an occupation OCCUPY that has anything to with physics,(1) or maths; CHEMIST I am not the(2) type at all In fact at school, I was a SCIENCE complete(3) in these subjects Neither am I very FAIL
good at dealing with people, nor am I(4) , so jobs in AMBITION business, administration and (5) don't really interest MANAGE me either Moreover I find it (6) to be surrounded by IRRITATE
a lot of people; I would much rather have a job involving creativework or (7) skills of some sort I
would like to have the ART
chance of work outdoors (8) and perhaps a bit of OCCASION traveling too I am not (9) concerned about becoming PARTICULAR rich but I would like to have a (10) income enough to REASON live comfortably
SECTION THREE: READING
Question 1: Read the following passage and answer the questions by choosing A, B, C, or D, which you think is correct:
The sun today is a yellow dwarf star It is fueled by thermonuclear reactions near its center that convert hydrogen to helium The Sun has existed in its present state for about billion, 600 million years and is thousands of times larger than the Earth
By studying other stars, astronomers can predict what of the rest of the Sun’s life will be like About billion years from now, the core of the sun will shrink and become hotter The surface temperature will fall The higher temperature of the center will increase the rate of thermonuclear reactions The outer regions of the Sun will expand approximately 35 million miles, about the distance to Mercury, which is the closet planet to the Sun The Sun will be then a red giant star Temperatures on the Earth will become too hot for life to exist
Once the Sun has used up its thermonuclear energy as a red giant, it will begin to shirk After it shirks to the size of the Earth, it will become a white dwarf star The Sun may throw off huge amounts of gases in violent eruptions called nova explosions as it changes from a red giant to a white dwarf
After billions of years as a white dwarf, the Sun will have lost its heat Such a star is called a black dwarf After the Sun has become a black dwarf, the Earth will be dark and cold If any atmosphere remains there, it will have frozen onto the Earth’s surface
(3)D To describe changes that the Sun will go through IT can be inferred from the passage that the Sun
A is approximately halfway through its life as a yellow dwarf B has been in existence for 10 billion years
C is rapidly changing in size and brightness
D will continue as a yellow dwarf for another 10 billion years
3 What will probably be the first stage of change as the Sun becomes a red giant? A Its core will cool off and use less fuel
B Its surface will become hotter and shrink C It will throw off huge amounts of gases D Its center will grow smaller and hotter
4 According to the passage, which of the following best describes the sequence of stages that the Sun will probably pass through?
A Yellow dwarf, white dwarf, red giant, black giant B Red giant, white dwarf, red dwarf, nova explosion C Yellow dwarf, red giant, white dwarf, black dwarf D White dwarf, red giant, black dwarf, yellow dwarf
5 The word “ there” in the last sentence of paragraph refers to A our own planet
B the outer surface of the Sun C the core of a black dwarf D the planet Mercury
Question Fill in the blank with an appropriate preposition:
1 Valuable chemical products are obtained ………… volcanic substances, including gold and silver The company has laid ………… strict procedures for this kind of situation
3 You are perfectly capable………making your own bed, I would have thought! Keep away ………those electrical wires
5 My friend, Howard, is very enthusiastic ……….his new equipment That boy threw a piece of stone ……… the old man
7 The geese no longer had their freedom, but they were safe………… the other fowls
SECTION FOUR: WRITING
Finish each of the following sentences in such a way that it means exactly the same as the sentence printed before it (4 pts.)
EXAMPLE: I expect that he will get there by lunchtime ANSWER : I expect him to get there by lunchtime.
1 I had only just put the phone down when the boss rang back Hardly ………
2 While I strongly disapprove of your behaviour, I will help you this time Despite my ……… My mother was the most warm-hearted person I’ve ever known
I’ve ……… Her hobby is one thing that she doesn't intend to give up
She has ……… Nick told one of the detectives that he had taken the cashbox
Nick admitted ……… We are spending $ 300 on repairs before we sell the car
By the time we sell the car, ……… The room wasn’t only cold, it was also very damp
Not ………