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21．--Will people live to be 200 years old?-- ．A．No, they aren't B．No.they won't C．No, they don't D．No, they can't 【查看更多】

 

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—Will people live to be 200 years old?
—____________.
A．No, they aren’t.B．No, they won’t.C．No, they don’t.D．No, they can’t.

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—Will people live to be 200 years old?  —____________.

A．No, they aren’t. B．No, they won’t. C．No, they don’t. D．No, they can’t.

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—Will people live to be 200 years old?  —____________.

A．No, they aren’t.    B．No, they won’t.    C．No, they don’t.    D．No, they can’t.

 

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—Will people live to be 200 years old?
—____________.
A．No, they aren’t.B．No, they won’t.C．No, they don’t.D．No, they can’t.

查看答案和解析>>

—Will people live to be 200 years old?
—____________.

A．No, they aren’t.B．No, they won’t.C．No, they don’t.D．No, they can’t.

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