to nuclear radiation, even for a short time, may produce variants of genes in human bodies. ——青夏教育精英家教网—

摘要： to nuclear radiation, even for a short time, may produce variants of genes in human bodies. A. Being exposed B. Having exposed C. Exposed D. After being exposed

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_____ to nuclear radiation, even for a short time, may produce variants (变异体) of genes in bodies.

A. Being exposed

B. Having exposed

C. Exposed

D. After being exposed

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______ to nuclear radiation, even for a short time, may produce variants(变异体) of genes in human bodies.

A. Being exposed B. Having exposed C. Exposed D. After being exposed

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______ to nuclear radiation, even for a short time, may produce variants(变异体) of genes in human bodies.

　　A. Being exposed B. Having exposed

　　C. Exposed 　 D. After being exposed

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________ to nuclear radiation, even for a short time, may produce variants (变异体) of genes in human bodies.

[　　]

A．Being exposed

B．Having exposed

C．Exposed

D．After being exposed

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. ___ to nuclear radiation, even for a short time may produce variants（变异体）of genes in human bodies.

A. Being exposed B. Having exposed

C. Exposed D. After being exposed

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