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解析:Scientists are ______ certain that

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【单选题】Scientists are ______ certain that there is a cancer-inhibiting agent in the blood of the shark.
A.dubiously
B.virtually
C.queerly
D.randomly
网考网参考答案:B
网考网解析:

dubiously怀疑地;queerly奇怪地;randomly随机地,无目的地;这三个词在语义上都无法与certain搭配。virtually几乎,事实上,实际上,在此修饰certain,意思是“几乎确信无疑”。 查看试题解析出处>>

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