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(当被加热时,金属膨胀,如果被冷却将会收缩。被动语态,省略了主语和谓语动词。)----------------------------------------3、 It is necessary that the issue_______. ( ) A.iS discussed B.be discussedC.should discussD.will be discussed 参考答案: B (这个问题被讨论是有必要的。在表示愿望、建议、请求等形容词后的主语从句中要用虚拟语气,其形成为should+v.或省略should,直接用v.。)----------------------------------------4、 It has long been known that there is_______electric field inside_______earth.( ) A.a,/ B.an,theC.the,/ D.an,/ 参考答案: B (据称在地球内部有一个磁场。an用于发音以元音开头的名词前;the用于表示世上独一无二的事物和自然现象的名词前。)----------------------------------------5、 The painter’S_______for painting the house was¥400,000. () A.judgmentB.planC.considerationD.estimate 参考答案: D (漆工估计粉刷这个房子要花40万元。judgment判断;plan计划;consideration考虑;estimate估计。)----------------------------------------6、 _______you return those books to the library immediately you will have to pay a fine.( ) A.UntilB.IfC.UnlessD.Provided 参考答案: C (除非你立即归还图书馆的书,否则你将付罚金。c最合题意。)----------------------------------------7、 So little_______about mathematics that the lecture was completely beyond me. ( ) A.I know B.I knewC.dn I knowD.did I knOW 参考答案: D (当构成关联从属连词so…that的so位于句首时,往往用倒装结构。)----------------------------------------8、 Here we found little snow;most of it seemed_______blown off the mountain. ( ) A.to have been B.to beC.that it was D.that it had been 参考答案: A (这儿有一点儿雪,似乎是被从山上吹下来的。用现在完成时,表示对现在造成的影响。)----------------------------------------9、 She seldom leaves the room in winter_______? ( ) A.does she B.doesn’t sheC.does it D.doesn’t it 参考答案: A (冬天她几乎不离开房间,是吗?seldom表示几乎不,表否定,在反意疑问句中,主句有表示否定的。在反意疑问句中,主句有表示否定的反意问句中要用肯定形式。)----------------------------------------10、 The ship_______a heavy storm shortly
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