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1.Some one called me up in the middle of the night,but they hung up________ I could answer the phone.

　　 A.as B.since C.until D.before

　　 (NMET 2000)

　　 命題意圖：本題主要考查連詞的語意，但需結合時間，尤其是前后兩個動作發(fā)生的先后順序，故難度較大。本題屬五星題。

　　 知識依托：as 引導時間狀語從句，意思是當……時，since 自從，until直到……，before在……之前。答案選D。

　　 錯解分析：錯誤的原因在于沒有了解相關動作發(fā)生的先后關系，they hung up發(fā)生在I could answer the phone之前，題目的意思是：半夜里有人給我打電話，但我還沒來得及接/在我能接電話之前，他們就掛掉了。

　　 解題方法與技巧：解關于從屬連詞的題首先要了解各自的語意；在處理習題時，還要結合上下文的語境和結構來進行綜合確定。

　　 答案：D

　　 ●錦囊妙計

8.(★★★★)The difficulty we now are facing is the question________ we can persvade him to tell the truth.

　　 A.that B.whether C.what D.how

　　 ●案例探究

7.(★★★★★)After the war,a new school building was put up________ there has once been a theatre.

　　 A.that B.where C.what D.who

6.(★★★★)The reason________ their failure you know is________ they didn’t get fully prepared for the experiment. (福州畢業(yè)班質檢題)

　　 A.why;that B.that;why C.for;that D.why;because

5.(★★★★★)-My foot hurts terribly,doctor.

　　 -Well,I wonder________ it has been like this.

　　 A.since when B.since then C.how D.when

4.The WTO cannot live up to its name________ it does not include a country that is home to one fifth of mankind.

　　 A.as long as B.while C.if D.even though

3.(★★★★★)It is at least three years________ they left here.

　　 A.when B.before C.since D.that

2.(★★★★)The thought________ he might fail in the exam worried him.

　　 A.when B.which C.what D.that

1.(★★★★)________ the new plan can be carried out will be discussed at the meeting tomorrow.

　　 A.Which B.What C.That D.Whether

31.(4分)在研究“電磁鐵的磁性強弱跟什么因素有關”時，小華和小杰從實驗室選取了匝數分別為50匝和100匝的外形相同的電磁鐵，并先后將這兩個電磁鐵接入電路中，如圖所示.閉合開關S后用電磁鐵吸引大頭針，并移動滑動變阻器的滑片P重復了多次實驗，記錄如下：

　(1)實驗中，可通過觀察____來判定電磁鐵的磁性強弱.

　(2)分析第1、4次和2、5次的實驗可得出結論：在____相同的情況下，線圈的匝數越____磁性越強.

　(3)分析第4、5、6次的實驗記錄，可得出結論：____.