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单项选择题

A．The presence of life-forms far below the Earth’’s surface.
B．The risk of infection from rare strains of bacteria.
C．Fictional representations of a hidden underground world.
D．The reliability of evidence collected by new drilling methods.
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热门试题

单项选择题A．Because she wanted to know if everything was OK with her parents.B．Because she wanted to invited her parents to Billy’’s birthday party.C．Because she wanted to tell her parents that everything was OK with her children.D．Because she wanted to tell her parents that Tom was given a raise.

A．Because she wanted to know if everything was OK with her parents.
B．Because she wanted to invited her parents to Billy’’s birthday party.
C．Because she wanted to tell her parents that everything was OK with her children.
D．Because she wanted to tell her parents that Tom was given a raise.

单项选择题A．Go to the concert.B．Go to work.C．See her friends as planned.D．Finish her homework.

A．Go to the concert.
B．Go to work.
C．See her friends as planned.
D．Finish her homework.