【題目】The machine is used _________ doctors measure the patients’ temperature?

A.helpB.to helpingC.for helpD.to help

【答案】D

【解析】

句意：這臺機器被用來幫助醫(yī)生給病人測量體溫。

考查固定搭配。help意為“幫助”，既可作動詞也可作名詞。A. help動詞原形，B. to helping介詞+動名詞，C. for help，錯誤選項，正確形式：for helping。D. to help動詞不定式結(jié)構。be used to do sth相當于be used for doing sth.意為“被用來做某事”，固定搭配。綜上所述，故選D。

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