单项选择题

What does the woman imply about archaea

A．They need very little energy.
B．They're found at all depths of the ocean.
C．They live where there is no sunlight.
D．They're similar to many other kinds of microorganisms.

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单项选择题

Besides their source of energy, what is major difference between archaean and bacteria

A．Their genetics.
B．Their size.
C．What they look like.
D．The amount of energy they nee

单项选择题

What is the woman's project mainly about

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.