How hydrothermal vents are formed．,How living things ge-找考题网

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．At the end of November.B．In the middle of November.C．At the beginning of December.D．In the middle of December..

A．At the end of November.
B．In the middle of November.
C．At the beginning of December.
D．In the middle of December..

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A．thereforeB．howeverC．whileD．but

A．therefore
B．however
C．while
D．but

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