在职攻硕英语考试

解析:A magnet is able to (picking up) a

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【单选题】 A magnet is able to (picking up) a piece of steel or iron because (its magnetic field) flows into the metal, turning the metal (into) a temporary magnet, and the two magnets (then attract) each other.
A.picking up
B.its magnetic field
C.into
D.then attract

网考网参考答案:A
网考网解析:

将picking up改为to pick up。be able to do sth.为固定结构,表示“能够胜任某事”。此句的意思是“磁铁能够吸起一小块钢铁,是因为它内部的磁场流入金属中,使金属暂时转变为磁铁,从而两块磁铁彼此吸引”。 查看试题解析出处>>

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