题目

改错：(2018·天津高考)The global population expected to grow to 9.6 billion by 2050, and some analysts estimate that food production will need to be raised by 50 percent to maintain current levels. ________________________________________________________________________ 答案：expected前加is　预计全球人口在2050年前达到96亿，主语“The global population”是被预计的对象，故使用一般现在时的被动语态；同时population是单数，故expected前加is。

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