题目内容

【题目】Water ______ into steam if it is heated to its boiling point.

A.is going to be turnedB.will be turned

C.has been turnedD.is being turned

【答案】B

【解析】

考查时态和语态。句意:如果水被加热到沸点,它就会被变成蒸汽。句中if引导条件状语从句,根据is判断为一般现在时,结合主将从现原则,主句应用一般将来时,water和谓语动词turn…into…(把……变成)之间是动宾关系,故用被动语态,即一般将来时的被动语态will be done,故选B项。

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