Expels are not sure of vaccine’s curative effect on_________

Expels are not sure of vaccine’s curative effect on_________.

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环境有害因素对机体健康造成的危害及其程度最主要取决于环境有害因素作用的强度、作用时间及机体的健康状况。( )

环境有害因素对机体健康造成的危害及其程度最主要取决于环境有害因素作用的强度、作用时间及机体的健康状况。( )

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Selma Shapiro had her nose straightened because she wanted _

Selma Shapiro had her nose straightened because she wanted __________.

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