【題目】Math is very useful, ________ everyone in our class works hard at it.

A.orB.butC.becauseD.so

【答案】D

【解析】

句意:數(shù)學是有用的,因此我們班里每個人都努力學習它。

考查連詞辨析。or或者,否則;but但是;because因為;so因此,所以。根據(jù)句意可知,這兩句話之間是因果關系,前一句是原因,后一句是結果,應用so連接。故選D。

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