(   ) 3. The problem the new teacher is faced with is that it always takes the class a while to
       at the start of the lesson.

A. cut down    B. settle down C. turn down    D. set down

3. B考查動(dòng)詞短語辨析。cut down砍伐，降低； settle down安靜下來，定居；turn down調(diào)小，降低； setdown記下，寫下。句意：新老師面臨的問題是：在開始上課的時(shí)候，要花好久才能讓學(xué)生們安靜下來。

題目來源：高考丟分題英語 > Unit 5 Canada-

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Just seven years ago,the Jarvik-7 artificial(人造的)heart was being cheered as the model of human creativeness. The sight of Barney Clark―alive and conscious after trading his diseased heart for a metal-and-plastic pump^convinced the press，the public and many doctors that the future had arrived. It hadn't. After monitoring production of the Jarvik-7, and reviewing its effects on the 150 or so patients (most of whom got the device as a temporary measure ) ，the U.S. Food and Drug

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A.   a good life-saver

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