______ that the environment continues to be damaged at the current rate, it will not be long before the earth is totally destroy

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问题 ______ that the environment continues to be damaged at the current rate, it will not be long before the earth is totally destroyed.

选项 A、Concerning
B、Assuming
C、Ascertaining
D、Regarding

答案B

解析 concern和regard均可作动词,但concerning和regarding可作介词,意思为“有关,关于”,后面不直接跟that从句,如:Regarding the punishment,what would you advise?ascertain“确定(事实),探知”;assume“假定,假想”,assuming可以作连词表示“如果”,相当于given。B为正确答案。
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