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单选题交通银行

2016-05-06

By__________ a cheaper material for the steel in our products, we can greatly reduce manufacturing costs.

A．substituting

B．replacing

C．alternating

D．displacing

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参考答案

A

答案解析

句子表示“用更便宜的材料代替钢铁”，意为“用A代替B”的词组substitute A for B放在空格处的句意最自然，故选A。

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