【題目】—I really like eating potato chips.Do you know ________they were invented?

—Actually,they were invented by mistake.

A.whyB.whenC.howD.whether

【答案】C

【解析】

句意：——我真的很喜歡吃薯片。你知道它們是怎么被發(fā)明出來(lái)的嗎？——事實(shí)上，它們是被錯(cuò)誤地發(fā)明出來(lái)的。

本題考查賓語(yǔ)從句。why為什么，when什么時(shí)候，how如何，whether是否。根據(jù)they were invented by mistake.可知，此處詢(xún)問(wèn)它們是如何被發(fā)明的。故選C。

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