[D19] It is uncertain ______ side effect the medicine will bring about,although about twothousand patients have taken it.A.that B.whatC.how D.whether请翻译 ,并分析.

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[D19] It is uncertain ______ side effect the medicine will bring about,although about twothousand patients have taken it.A.that B.whatC.how D.whether请翻译 ,并分析.

[D19] It is uncertain ______ side effect the medicine will bring about,although about twothousand patients have taken it.A.that B.whatC.how D.whether请翻译 ,并分析.
[D19] It is uncertain ______ side effect the medicine will bring about,although about two
thousand patients have taken it.
A.that
B.what
C.how
D.whether
请翻译 ,并分析.

[D19] It is uncertain ______ side effect the medicine will bring about,although about twothousand patients have taken it.A.that B.whatC.how D.whether请翻译 ,并分析.
这道题bring about 缺宾语,在选项中what 可以做bring about的宾语.
这句话的意思是:"尽管两千位患者在服用,但是这种药的副作用还没有确定.”

大概意思是 尽管已经有2000个病人服用过这种药 ,但这种药会有什么副作用还是不确定
定语从句咩 根据句意 “带来什么副作用”的“什么”就是 选 what 咯

虽然有二千个病人使用了这药物,但对于它带来的副作用还是不确定的。
分析:it is做形式主语,what引导真正的主语。

选择 b 做bring about 的宾语