【单选题】【消耗次数：1】
工件在夹具中定位，长V形块能限制工件的（）个自由度。
①
2个
②
3个
③
4个
④
5个
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After the Minister of Education had finished speaking at the press conference, he was made ______ all sorts of awkward questions.
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answer
②
answering
③
answered
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to answer
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The medicine is on sale everywhere．You can get it at _______ chemists．
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each
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some
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certain
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any
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Medical research has shown that the widespread use of cigarettes contributes ___ the increaseof cancers.
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to
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for
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with
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towards
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I _____ the right to appeal to higher authorities.
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conserve
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reserve
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store
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remain
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It s surprising that this idea took so long to _______.
①
add to
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dispose of
③
catch on
④
absorb in
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The problem is （） it may take time for new facts to become available.
①
that
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how
③
what
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if
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Mr. Clinton, together with his wife and children, _______ going to the park next weekend.
①
is
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has
③
are
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was
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①
horrible
②
thorough
③
thoughtful
④
weird
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If it were not for the fact that he was a millionaire, she ____ him.
①
might never marry
②
will never marry
③
would never have married
④
would never marry