题目内容
（请给出正确答案）
[主观题]
We can feel things are heavy because. [A] weight is a fixed quality in an object
We can feel things are heavy because.
[A] weight is a fixed quality in an object
[B] they are far away from the centre of the earth
[C] of the earth's strong attraction for them
[D] they are not taken away from the surface of the earth
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