You save 3 percent on the day’s heating or cooling costs by setting your thermostat back one degree (higher for cooling, lower for heating) for that 24-hour period.. Maintain those setti[r]
(1)KEY –fourth test for Grade 11 Time: 45 minutes
Full name: Class : 11
(Students have to write the answers in the boxes or blanks provided.)
I
Multiple choice
Choose the word whose stresseed part is different from the others’
1 A comfortable B postcard C architecture D artificial
2 A express B panel C wrestling D danger
Choose the word whose underlined part is pronounced differently from those of the others: 3 A polluted B consume C nuclear D fuel
4 A geothermal B power C solar D hydro 5 A survive B prohibit C fertilizer D environment Choose the best option for the blank in the following sentences:
6 My friend, I visited last week, is taking a holiday soon
A him B which C that D.whom
7 She is the first in the discussion to using nuclear power
A to object B objects C objected D objecting
8 The old man a black suit is a famous energy researcher
A who is wearing B wears C is wearing D all are correct 9 Many organizations have been set up and funds have been raised
A established B collapsed C founded D A&C
10 10 Solar energy, air and water are because there is a(n) supply A renewable/limited B non-renewable/
unlimited
C renewable/ unlimited
D non-renewable/ limited 11 11 Laws have been introduced to prohibit the killing of endangered animals
A forbid B decrease C ban D A&C
12 12 What’s the name of the man car you borrowed?
A whose B who C whom D all are correct
13 13 People are destroying the air by adding to it
A polluted B.pollutions C pollutants D.polluters 14 14 Many kinds of rare animals are on the verge of _
A disappearance B death C destruction D extinction
15 15 Scientists should be encouraged to develop _ for the present sources of energy A gases B alternatives C fuels D power
A Read the passage below and choose the best answers:
16 16 A B C D
17 17 A B C D
18 18 A B C D
19 19 A B C D
20 20 A B C D
II Writing
A finish the second sentence ao that it means exactly the same as the provided one: 21
B Fill in the blanks with the right form of the words provided in the parentheses: 31
(2)Choose the word that has the diffrent stress from the rest. Circle the best answer for each sentence.
Heating and cooling
* To save energy, set your thermostat as low as is comfortable in the winter and as high as is comfortable in the summer You save percent on the day’s heating or cooling costs by setting your thermostat back one degree (higher for cooling, lower for heating) for that 24-hour period Maintain those settings and you save
percent all season!
* Clean or replace heating and cooling filters once a month or as needed If your filter is in a cardboard frame, it needs to be replaced monthly during the heating season If your system doubles as a central
air-conditioning system, also clean or replace the filter monthly while the cooling system is in use * Clean air registers, baseboard heaters, and radiators as needed Make sure they're not blocked by
furniture, carpeting, or drapes
* Bleed trapped air from hot-water radiators once or twice a season If in doubt about how to perform this task, call a professional
* Use kitchen, bath, and other ventilating fans wisely In just one hour, these fans can pull out a houseful of warmed or cooled air Turn fans off as soon as they have done the job
* During the heating season, keep the draperies and blinds on your south-facing windows open during the day to allow sunlight and heat to enter your home
* Close drapes at night to help reduce heat loss
* During the cooling season, keep the window coverings closed during the day to prevent the sun from heating your home
* Make sure drapes don't block registers and air returns * Close off unoccupied rooms
* Install individual room controls to heat and cool rooms only when you use them
(3)Saving water and water-heating energy
* Install low-flow showerheads and faucet aerators
* Insulate long runs of hot-water supply pipe, especially sections that pass through unheated spaces * Repair or replace leaky faucets The drips add up fast and represent dollars going down the drain A hot
water faucet that leaks one drop per second wastes more than 2,300 gallons of hot water per year, which could cost as much as $36 The replacement washers needed to repair a leaky faucet costs only a few cents
* Lower the water heater thermostat to 120°F., or raise the temperature and install a cold water-mixing valve to the line Water reaching your tap will be 120°F., will be safe enough to avoid scalds, and will save
you money Laundering
* Wash with cold water whenever possible * Wash and dry full loads to maximize efficiency
* Don't overload dryers Overloaded dryers use more energy, cause clothes to wrinkle so they may need to be ironed, and wears out clothes more quickly
* Use suds savers and front-loading washers for maximum efficiency
* Always adjust the water level to fit load size Overloaded washers don't clean clothes as effectively so they even may need to be rewashed
* Clean the lint filter after each drying cycle to maintain dryer efficiency Energy-efficient lighting
* Use task lighting to target work and leisure activities This lets you reduce your overall room lighting levels
(4)a day They cost more initially but use 75 percent less electricity and last about ten times longer than incandescent bulbs
* Open shades and blinds to take advantage of natural light
* Select bulbs carefully Look for the highest lumens at the lowest wattage Wattage is the power needed to make a bulb work Lumens measure brightness
* Long-life bulbs emit less light than standard incandescent bulbs of the same wattage Use long-life bulbs only in hard-to-reach places
* Keep light fixtures clean to gain the most illumination Refrigerating
* Test the tightness of the door seal on refrigerators and freezers If the seal doesn't tightly hold a dollar bill when the door is closed, it's probably time to adjust or replace the gasket
* Replace old refrigerators A 1980s-era refrigerator will cost up to 75 percent more to operate than a new super-efficient model
* For greatest efficency set refrigerators at 40º F and freezers at 0º F Cooking
* Use your oven instead of your cook top to cut cooking costs Surface units heat continuously, but an insulated oven normally heats one-third of the time it's in use
* Don't peek Cooking temperatures can drop as much as 50º every time the oven door is opened, causing the oven to reheat
* Use the oven's self-cleaning cycle only for big cleaning jobs Start the cycle while the oven is still hot from baking