【題目】According to scientific research, only 1.5 grams of salt ______ for each man every day.

A. has needed B. is needed C. will need D. needs

【答案】B

【解析】

句意“根據(jù)科學(xué)調(diào)查，每天每個(gè)人僅需要1.5克鹽”。根據(jù)every day可知，用一般現(xiàn)在時(shí)，排除A和C，且主語(yǔ)salt與謂語(yǔ)need之間為被動(dòng)關(guān)系，故選B。

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