17.We tried all sorts of medicine but they were all ______.(  )
A.usefullyB.usefulC.uselesslyD.useless

分析 我們嘗試了各種藥但是都沒有用.

解答 答案是D.本題考查詞義辨析.A項(xiàng)副詞表示"有用"; B項(xiàng)形容詞表示"有用的";C項(xiàng)副詞表示"無用";D項(xiàng)形容詞表示"無用的";be 動(dòng)詞were后需要形容詞,排除A和C;故根據(jù)句意所有的藥都"無用",答案選D.

點(diǎn)評(píng) 形容詞辨析的關(guān)鍵在于積累詞匯和一些相關(guān)的固定搭配,在此基礎(chǔ)上結(jié)合語境,做出合理的判斷.

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