A beam of light will not bend round the comers unless______to do so with the help of a reflecting device.

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问题 A beam of light will not bend round the comers unless______to do so with the help of a reflecting device.

选项 A、being done
B、made
C、to be made
D、having made

答案B

解析句意：一束光除非是在反射装置的帮助下，否则它是不能弯曲照到角落里的。本题考查状语从句。状语从句中，若主句的主语和从句的主语一致，而且从句中的谓语动词是be，则可以将其主谓省略。所以本句是省略了主语和系动词的分词状语结构。完整句型应为“unless it is made to do so…”故选B。

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本试题收录于：英语题库普高专升本分类

英语

普高专升本

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A beam of light will not bend round the comers unless______to do so with the help of a reflecting device.

英语

普高专升本

Onethingalmosteveryoneisagreedon,includingAmericans,isthattheyplaceaveryhighvaluationuponsuccess.Successdoes

______,we’dbettermakesomechangesintheplan.

Underthispressuretheirwholewayoflife,eventheirbodies,becamegreatlychanged.

Acontractisanagreementbetweentwoormorepeople【71】onepersonagreestodosomethingbyaspecifieddateinreturnfors

FewAmericansremaininonepositionoroneplaceforalifetime.Wemovefromtowntocitytosuburb,fromhighschooltocolle

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