Manyscientistshavebelievedthat

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Many scientists have believed that there may be a _________of life on the Mar．

A．mark

B．signal

C．sigh

D．sign

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—David, can you tell me where I will _______ a good second-hand bike at a low price?
—You should turn to George, for he is a well-informed man.

A．make up

B．hold up

C．pick up

D．take up

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—Do you know the headmaster well?
—Not really, just a nodding ______.

A．acquaintance	B．administration
C．consequence	D．consideration

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---Shall we go fishing on Saturday or Sunday?
--- Up to you. _______.

A．That’s all right.	B．Never mind
C．That’s not the point.	D．It makes no difference to me.

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It was at the street bend ______he was making a sudden turn ______Tom crashed into a tree.

A．that; which	B．when; that
C．where; that	D．which; that

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The book tells stories of the earthquake through the eyes of those ______ lives were affected.

A．which

B．that

C．who

D．whose

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