单项选择题

A．How hydrothermal vents are formed.
B．How living things get energy from sunlight.
C．The harmful effects of certain chemicals in the ocean.
D．Microorganisms that get energy from chemical reactions.
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A．They are not beautiful at all.B．They are quite comfortable.C．They are too expensive.D．They deserve more money.
A．They are not beautiful at all.
B．They are quite comfortable.
C．They are too expensive.
D．They deserve more money.
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A．He didn’t go to the interview.B．He succeeded in the interview.C．He forgot about the interview.D．He was too nervous in the interview.
A．He didn’t go to the interview.
B．He succeeded in the interview.
C．He forgot about the interview.
D．He was too nervous in the interview.
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