【題目】—Sorry, I don't know how many colours there are in a rainbow.

—Are you joking? This is just ________ knowledge.

A.naturalB.generalC.properD.ancient

【答案】B

【解析】

句意:——對不起,我不知道彩虹有多少種顏色。——你在開玩笑嗎?這只是常識。

考查形容詞辨析。natural自然的;general普遍的,總的, 常規(guī)的;proper正確的,恰當(dāng)?shù)模?/span>ancient古代的,古老的。general knowledge:常識。根據(jù)常識可知“彩虹有7種顏色”,結(jié)合上文“我不知道彩虹有多少種顏色”可知此句是“你在開玩笑嗎?這只是常識!惫蔬xB。

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