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influential acceptable recognized appropriate junk weightperceive stored damage infected longevity composition7. Studies of nutrition must take into account the state of the body before and after experiments, as well as the chemical ________________ of the whole diet and of all material excreted and eliminated from the body.

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influential acceptable recognized appropriate junk weightperceive stored damage infected longevity composition8. Some vitamins are ___________ as essential nutrients, necessary in the diet for good health.

My father told me _____ just now.

A. two piece of news
B. two pieces of news
C. two news

We know _____ travels not so fast as light.

A. sound
B. sounds
C. the sounds

Joan is ____.

A. Mary's and Jack sister
B. Mary's and Jack's sister
C. Mary and Jack's sister

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