13.Eating too many sweets ______ our teeth.( 。
A.is good forB.is bad forC.are good forD.are bad for

分析 吃太多甜食對(duì)我們的牙齒有害.

解答 答案:B.考查形容詞短語(yǔ).句意"吃太多甜食對(duì)我們的牙齒有害.".結(jié)合語(yǔ)境,動(dòng)名詞短語(yǔ)做主語(yǔ),謂語(yǔ)動(dòng)詞用單數(shù),因此C,D不正確.be good for對(duì)…有好處.be bad for對(duì)…有害.由sweets甜食,可知吃太多對(duì)牙齒有害,因此A不正確.答案是B.

點(diǎn)評(píng) 考查形容詞短語(yǔ),在日常學(xué)習(xí)中要積累一些形容詞短語(yǔ)的固定用法,結(jié)合語(yǔ)境,選擇合適的形式.完成試題.

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