题目内容

Only one tenth of the cells in your body are really you. The rest are ____.

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An experiment found that animals that did not have bacteria ____or had to have a special diet.

There are ____octillion cells in the human body.

Most of the atoms in the human body are just empty ____.

Without the empty space, you could fit your body inside a box measuring ____of a centimetre either side.

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