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单选题 57. 金属有许多有用的特性 , 其中强度是最重要的。

A

Metal has many useful properties, of which strength is the most important.

B

Metal has many useful prosperous, of which strength is most important.

C

Metal has many useful properties, in which strength is more important

D

Metal has many useful prosperous, in which strength is the most important.

正确答案 :A

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