In doing experiments you must be ______ the precision instruments.A．more than careful wit
正确答案
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In doing experiments, you must be ______ the precision instruments.
A．more than careful with
B．more careful than with
C．careful more than with
D．with more careful than
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正确答案：A
morethan后接形容词，表示被修饰的形容词的强烈程度，是常见的加强语气的结构，意为“非常，十分；岂止”。本题还考查了另一短语becarefulwith，因此答案是A。