单项选择题

Experiments have to be made under(care) ______ controlled conditions．
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单项选择题
He ______ me what your name was.
A．told
B．asked
C．said
D．Both A and B
单项选择题
if we can ______ our present difficulties, then everything should be all right.
A．come across
B．get over
C．come over
D．get off
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