A. effects
B. steps
C. fields
D. folks
A. easy
B. sky
C. study
D. happy
A. evolve
B. protect
C. argue
D. resist
A. devastated
B. environment
C. diversity
D. ecology
A. isn’t she
B. isn’t her
C. hasn’t she
D. hasn’t her
A. to have dumped
B. dumping
C. having dumped
D. having been dumped
A. has
B. had
C. have
D. will have
A. sent
B. was sending
C. had sent
D. send
A. Be that as it may
B. Now that
C. Notwithstanding
D. Providing
A. leave
B. will leave
C. have left
D. shall leave
A. infectious
B. infection
C. infect
D. infectiously
A. see through
B. work out
C. make up
D. get round
A. cheer
B. fear
C. scare
D. anger
A. truant
B. runaway
C. absent
D. joyride
A. search
B. look
C. stretch
D. rack
A. clothing
B. clothes
C. cloth
D. skin
A. fatal
B. safe
C. contagious
D. immune
A. finish working
B. start working
C. continue working
D. postpone working
A. neglected
B. concentrated
C. suspected
D. bethought
A. made his mother pleased
B. made his mother angry
C. made his mother worried
D. made his mother ashamed
A. I totally agree with you
B. No. I don't think so
C. What on earth you are talking about
D. You can say it again
A. Yes. I am very busy.
B. Yeah. Good idea. I'd love to.
C. What a good friend you are!
D. What do you think?
A. The height of cloud formation in the atmosphere.
B. The amount of heat they receive from the Sun.
C. The strength of their large scale winds.
D. The strength of their oceanic currents.
A. To describe the heat of the Sun.
B. To illustrate how water vapor is stored.
C. To show how energy is stored.
D. To give an example of a heat source
A. around the higher latitudes
B. in the tropics
C. because of large - scale winds
D. because of strong ocean currents
A. is stored in clouds in the lower latitudes
B. is transported by ocean currents
C. never leaves the upper atmosphere
D. gets stored as latent heat
A. square meter
B. the Sun’s energy
C. latent heat
D. the atmosphere
A. suggest that electricity should be alternated with safer sources of energy
B. emphasize the usefulness and adaptability of electricity
C. imply that electricity is not the only useful source of energy
D. discuss which source of energy can be a suitable alternative to electricity
A. Gas
B. Petrol
C. Steam
D. Hot wind
A. Voltages.
B. Electric magnets.
C. Generators or turbines.
D. Pipes and radiators.
A. atomic power and water
B. water and coal
C. sunlight and wind power
D. wind and gas
A. harmful effects
B. the tides
C. scientists
D. new ways
A. Sunlight
B. Petrol
C. Water
D. Wind
A. "Types of Power Plants”
B. “Electricity: Harmful Effects on Our Life”
C. “How to Produce Electricity”
D. "Why Electricity Is So Remarkable"
A. is
B. about
C. to be
D. others
A. are invited
B. science lecture
C. which
D. were risen
A. The photographs of Mars taken from the Earth are clearer than those taken by satellite.
B. The photographs of Mars taken from the Earth are not as clear as those taken by satellite.
C. The photographs of Mars taken from the Earth are fader than those taken by satellite.
D. The photographs of the earth are not as clear as those of Mars.
A. Kerry told Mary I had something to tell her that day.
B. Kerry told Mary he had had something to tell her.
C. Kerry told Mary she had had something to tell him that day.
D. Kerry told Mary he had something to tell her that day
A. John may be very surprised to receive my letter.
B. John might have been very surprised to receive my letter.
C. John must be very surprised to receive my letter.
D. John must have been very surprised to receive my letter.
A. Your health will be improved unless you use fresh water for cooking.
B. Your health won’t be improved if you use fresh water for cooking
C. Your health will be improved as long as you use fresh water for cooking.
D. Your health can’t be improved in case you use fresh water for cooking.
A. If it hadn’t been for the heavy snowfall, all the trains in the capital city of England would have been cancelled.
B. Only after all the trains in the capital city of England were cancelled dit it snow heavily.
C. So heavy was the snowfall that all the trains in the capital city of England were cancelled.
D. Had it snowed heavily, all the trains in the capital city of England wouldn’t have been cancelled.
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