【題目】Officers in the WHO once said only 1. 5 grams of salt ________needfor each man every day.

【答案】is needed

【解析】

句意:世衛(wèi)組織官員曾說(shuō),每人每天只需要1.5克鹽。

根據(jù)句意理解及句子結(jié)構(gòu)分析可知,這里句子的主語(yǔ)是salt,與謂語(yǔ)動(dòng)詞need之間是表示被動(dòng)關(guān)系,所以這里應(yīng)該用被動(dòng)結(jié)構(gòu),而句中時(shí)間是every day,所以謂語(yǔ)動(dòng)詞用一般現(xiàn)在時(shí)的被動(dòng),結(jié)構(gòu)是“am/ is/ are+過(guò)去分詞”,主語(yǔ)是不可數(shù)名詞,所以這里應(yīng)該用is,故答案為is needed

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