—Is it necessary to look up every new word when I come across it in reading?
—No. You ________， because you are likely to guess the meaning from the context.

A．can't B．mustn't
C．don't have to D．ought not to

C

解析試題分析:句意：---當(dāng)我在閱讀中遇到每一個(gè)生詞的時(shí)候有必要去查字典嗎？---沒必要，因?yàn)槟阌锌赡軓纳舷挛闹胁鲁鲆馑紒怼不能；B禁止；C沒必要；D不應(yīng)該。根據(jù)句意可知說話人認(rèn)為沒必要這樣做，故答案選C。
考點(diǎn)：考查情態(tài)動(dòng)詞。

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