【題目】-If you could reduce the price __________$15，I could increase my order.

-I'm afraid the best I can do is $10.

A. by B. to

C. at D. for

【答案】A

【解析】句意:——如果你能把價錢降低15美元，我可以增加我的訂單。——恐怕我最多只能降10美元。reduce to 減少到；reduce by 減少了。

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