It is said that nobody in the world can lift a subject which is himself.A. the tree times

问题补充：

It is said that nobody in the world can lift a subject which is himself.

A. the tree times weight of

B. three times the weight of

C. as three times as heavy as

D. three times as heavier as

答案：

A. the tree times weight of

(答案→)B. three times the weight of

C. as three times as heavy as

D. three times as heavier as

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