The milk must be preserved at this temperature until it ____.A．will processB．is
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The milk must be preserved at this temperature until it ____.| A．will process | B．is processed | C．has processed | D．had been processed |
|
答案
| B |
解析
试题分析：考查时态语态：until引导的时间状语从句，主句用的是情态动词，从句不能用将来时，用一般现在时，而且milk和process是被动关系，用一般现在时的被动，句意：牛奶必须在这样的温度被保存，直到被加工。选B。
点评：时态的考查要看时间，如果没有时间就根据上下文把隐含的时间找出来。这句话的关键是until连接的时间状语从句的时态问题，还有做时态题不能够忘记语态问题。 |
举一反三
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