The writer's attitude toward nuclear energy is ______.
A. indifferent
B. tolerant
C. favorable
D. negative
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The product was attacked when it was first（） , but gradually it was accepted.
A. advanced
B. occurred
C. appeared
D. challenged
According to the author, competition differs from conflict in that______.
A. it results in war in most cases
B. it induces efforts to expand territory
C. it is a kind of opposition among social entities
D. it is essentially a struggle for existence
He must have overslept, or he （） then.
A. would have been here
B. had to be here
C. should be here
D. would be here
I went to the bank to （） my dollars （） pounds.（）
A. converse…into
B. convey…into
C. convert…into
D. convence…into
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