根据下列短文,回答题。Screen Test1 Every year millions of women are scr

根据下列短文,回答题。Screen Test1 Every year millions of women are screened with X-rays to

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Watching too much TV may not only results in the laziness bu

Watching too much TV may not only results in the laziness but also the low abili

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Prohibition in the United States ushered in an era of crime

Prohibition in the United States ushered in an era of crime and corruption.A.A i

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In arithmetic, a number stands for the size of a set of thin

In arithmetic, a number stands for the size of a set of things.A.A measures B.B

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The megaphone makes the voice sound louder because it points

The megaphone makes the voice sound louder because it points sound waves in one

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