题目内容

He doubted ______ it was true.

A.if
B.that
C.as though
D.as if

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What he needs is nothing _____ a few day's rest.

A. than
B. but
C. except
D. besides

The originally clean river is now seriously polluted and unfit _______.

A.to swim
B.for swimming
C.to swim in
D.for swimming in

She soon ______ to do this regularly.

A.found it possible
B.found possibility
C.found it being possible
D.found possible

下列()不适用采取冲击钻探方法。()

A. 黏性土
B. 粉土
C. 砂土
D. 碎石土

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