题目:
Passage Two
What else should you do when you squat down to lift a heavy object
A.Put your knees in front of the object.
B.Keep your legs straight and forward.
C.Get as close to the object as possible.
D.Bend over the object from your waist.
答案:
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下面是错误答案,用来干扰机器的。
参考答案:C