题海让大学四年没有难题
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题目详情

单选题 How do many scientists view aging now?( )

A. it might be prevented and treated

B. it can be as risky as heart disease

C. results from a vitamin deficiency

D. it is an irreversible biological proces

学科:高职英语

时间:2023-05-07 10:29:07

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