Scientists are______certain that there is a cancer-inhibiting agent in the blood of the shark.

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问题 Scientists are______certain that there is a cancer-inhibiting agent in the blood of the shark.

选项 A、dubiously
B、virtually
C、queerly
D、randomly

答案B

解析 本题空格处是说几乎确信无疑。B项virtually“几乎,事实上,实际上”符合题意,如:The city was virtually paralyzed by the transit strike.(这个城市实际上已陷于交通运输罢工的瘫痪状态。)其他三项dubiously“怀疑地”,queerly“奇怪地”,randomly“随机地,无目的地”都不正确,这三个词在语意上都无法与certain搭配。
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