【題目】______ a child star can be a bad thing as well as a gift.
A.BeingB.To beC.BeenD.Having been
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【題目】Scientists have warned that coral reefs are likely to become the world’s first ecosystem ______ because of global warming.
A.to disappearB.disappearingC.disappearedD.having disappeared
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【題目】So far no one has______ convincing evidence of why dinosaurs died out,and it remains a mystery.
A.come about
B.come into
C.come up with
D.come out
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【題目】What is well known to us all is that success （由...組成）three important factors: talent, diligence and luck.
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【題目】It is so good a habit to instruct children to lay things _______ they belong when they are young.
A.to which
B.that
C.in which
D.where
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【題目】Three officials ______ in the “Golden Rice” test on school children have been fired.
A.involvingB.involvedC.to involveD.having involved
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