30. I would like to drive across the Sahara Desert next year, but my wife is not very ______ on the idea. A. happy B. keen
C. enthusiastic D. agreeable
参考答案： B
TIP：keen on“喜爱”，其余选项后不能用介词on。
四级语法与词汇（7）
1. For some time now, world leaders ____ out the necessity for agreement on arms reduction. A. had been pointing B. have been pointing C. were pointing D. pointed
参考答案： B
TIP：本句的时间状语是for some time now，既表示过去到现在的一段时间，又包括现阶段，所以应选用现在完成进行时。本句意为：一段时间以来，世界各国的领导们一直在指出有必要就武器削减问题达成共识。
2. Being color-blind, Sally can't make a ____ between red and green. A. difference B. distinction C. comparison D. division
参考答案： B TIP：make a distinction between表示“区分，对两者加以区别”。而make a difference between意为“对??加以区分对待”，例如：She makes a difference between her own child and her stepchild. make a comparison between表示“对??加以比较”，separation和division意为“分开”，不用于此结构。
3. The new colleague ____ to have worked in several big corporations before he joined our company. A. confesses B. declares C. claims D. confirms
参考答案： C
TIP：claim后接不定式表示“声称”，不定式的动作如果在claim之前发生则应使用不定式的完成时。confess表示“坦白，承认”，一般后接一些不好的事。declare表示“宣布，声明”，后面不接不定式。confirm表示“确认，证实”，之后也不用不定式。
4. The student said there were a few points in the essay he ____ impossible to comprehend. A. has found B. was finding C. would find
D. had found
参考答案： D
TIP：本句主句是过去时，而从句的动作“发现”发生在主句动作“说”之前，所以从句用过去完成时。
5. All of us would have enjoyed the party much more if there ____ quite such a crowd of people. A. hadn't been B. weren't C. hasn't been D. wouldn't be
参考答案： A
TIP：根据此句的主句，可以判断从句是与过去事实相反的虚拟语气，故从句使用过去完成时。
6. The heat in summer is no less ____ here in this mountain region. A. concentrated B. intense C. extensive D. intensive
参考答案： B
TIP：concentrated表示“浓缩的，专心致志的，全力以赴的”；extensive指“广泛的，广阔的”；intensive指“密集的，加强的”；而intense指“强烈的，剧烈的”，用来表示程度、感受、感情的强烈。本句译为：夏天这个山区一样炎热。
7. I must leave now. ____, if you want that book I'll bring it next time. A. Accidentally B. Eventually C. Naturally D. Incidentally
参考答案： D
TIP：accidentally意为“偶然地，意外地”；incidentally意为“附带地，顺便提及”；eventually意为“最后，终于”；naturally意为“自然地”。本句译为：我该走了，顺便提一句，如果你要那本书，我下次带来。
8. Fool ____ Jane is, she could not have done such a thing. A. who
B. that C. as D. like
参考答案： C
TIP：此句为倒装句。译为：简再笨也不会做这种事。
9. ____, I will marry him all the same. A. Was he rich or poor B. Whether rich or poor C. Were he rich or poor D. Be he rich or poor
参考答案： D
TIP：这一用法常见于正式表达当中，这是倒装后的结构。原来的结构为：whether+主语+be+表语。本句译为：不管他是贫穷还是富裕，我都会嫁给他。
10. The research requires more money than ____. A. has been put in B. have been put in C. being put in D. to be put in
参考答案： A
TIP：本题考查了than作连词引导比较状语从句。此句后半句做了省略，全句完整形式应该是：The research requires more money than the money which has been put in.
11. The motorist had to ____ to avoid knocking the old woman down in the middle of the road. A. twist B. swerve C. depart D. swing
参考答案： B
TIP：swerve意为“突然转向”，是惟一符合语境的选项；twist意为“扭曲”；depart意为“离开”；swing意为“摆动”，多指一端固定，另一端来回摆动。本句译为：那个驾驶员不得不突然转向，以避免撞倒正在路中间的那位老妇人。
12. She was so fat that she could only just ____ through the door. A. assemble