The radiation amount of a mobile phone for two half-hour periods per day is equa
题型:不详难度:来源:
The radiation amount of a mobile phone for two half-hour periods per day is equal to ______ to an X-ray for ten seconds.A.expose | B.exposing | C.exposed | D.being exposed |
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答案
D |
解析
试题分析:考察动名词用法。固定搭配be equal to…与…平等;其中的to是介词,后面要接动名词形式。教育:每天两个半小时的手机的辐射量相当于被X光线照射10秒。根据句意说明使用动名词的被动形式。故D正确。 点评:本题考察的动名词的用法,介词后面要接动名词形式,要根据上下文的语境来使用主动或者被动形式。另外要注意动名词表示的是经常性习惯性的行为。 |
举一反三
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