目前认为癌症是由()。
A.环境因素引起的
B.遗传因素引起的
C.辐射引起的
D.环境-基因相互作用引起的
E.其他因素引起的
参考答案:D
目前认为癌症是由()。
A.环境因素引起的
B.遗传因素引起的
C.辐射引起的
D.环境-基因相互作用引起的
E.其他因素引起的
参考答案:D
完形填空。 | |||
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