9. More than one-third of the Chinese in the United States live in California, _____ in San Francisco.

A. previouslyB. predominantlyC practicallyD. permanently

[答案] B. predominantly.

[注释] predominantly (=mostly; mainly) 主要地。 previously (=coming earlier in time or order) 先前, 早先; This is better than any solution previously. (这个办法比以前提出的任何解决办法都好。) practically (=really; in a practical way) 实际上。permanently (=going on for a long time) 永久地。

本题译文：在美国, 华人中有三分之一居住在加利福尼亚洲, 其中主要是在旧金山。

8. No one has _____ been able to trace the author of the poem.

A. still　 B. yet　 C. already　 D. just

[答案] B. yet

[注释] yet 常用于现在完成时的否定句中, 意为“尚, 还”。

7. The ship was _____ in a storm off Jamaica.

A. drowned　　 B. sunk　 C. wrecked　 D. submitted

[答案] C. wrecked

[注释] wreck vt. 撞坏, 毁坏; 1) My son wrecked my car. 2) My car was completely wrecked in the accident.

sink vt. 下沉, 沉没, 该动词也可作及物动词用, 意为“使下沉”, 但按本题句意看, 用被动语态不妥。 drown 溺死, 淹死： (vt.) He drowned his wife. (vi) He drowned in the river. (他在河里淹死了。) submit 1) (=put oneself under the control of another) 提交, 呈送 (to) ： Should a wife submit herself to her husband? (妻子应顺从他丈夫吗？) 2) (=put forward for option, discussion, decision ect.) 提出 (供评论、讨论决定等) You must submit your request to the committee. 3) (=surrender (to) , give in) 屈服,投降：After being defeated, they submitted to the enemy. (打败后, 他们向敌人投降了。)

6. She was afraid that unless the train speeded up she would lose her _____ to Scotland.

A. ticket　　 B. place　　 C. seat　　 D. connection

[答案] D. connection

[注释] lose one's connection to 误了到......地方去的 (汽车、火车、轮船的) 联运; The train was late and I missed my connection.

5. Henry's news report covering the conference was so _____ that nothing had been omitted.

A.understanding　prehensible

prehensive　 D.understandable

[答案] C. comprehensive.

[注释] comprehensive 完全的无所不包的; comprehensible 能懂的, 可以理解的; understandable 可以理解的, 主要用来指人的行为。understanding 用来指人时, 表示"善于理解别人或别人问题的 (人) 。"注意下面的搭配：a comprehensive map (街区详图) ; a comprehensible remark (听得懂的话) ,an understandable mistake (可以理解的错误) ; an understanding friend (一位能理解人的朋友) 。

4. The lost car of the Lees was found _____ in the woods off the highway.

A. vanished　 B. abandoned　 C. scattered　 D. rejected

[答案] B. abandoned

[注释] abandoned (=give up completely) 放弃, 抛弃; 1) The scientist abandoned his research for lack of fund. 2) The sailors abandoned the burning ship

[注意]abandon 暗指某人对其所抛弃的人或物将会发生什么事情不感兴趣, 如把撞坏的汽车抛弃在路旁。vanish (=suddenly disappear; go out of existence) vi.消失, 绝迹; 1) The airplane vanished into the clouds.2) Many kinds of animals have vanished form the earth. (许多种类的动物以在地球上绝迹。)　 scatter (=send, go in different direction) 驱使, 使分散; The police scattered the crowed. (警察驱散人群。) (=throw or put in various directions) 撒, 到处放; He scattered his clothes all over the room. reject (=refuse to accept) 拒绝接受; She rejected my suggestion

3. Our research has focused on a drug which is so _____ as to be able to change brain chemistry.

A. powerful B. influential　 C. monstrous　 D. vigorous

[答案] A. powerful

[注释] powerful (=having or producing great power) 强有力的。在这里四个形容词中, 只有powerful (有效力的) 可与表示药物的名词搭配。influential 有影响的, 有势力的, monstrous 异常大的, vigorous 精力旺盛的, 强健有力的。

2. The boy slipped out of the room and headed for the swimming pool without his parents' _____.

A. command　 B. conviction　 C. consent　 D. compromise

[答案] C. consent

[注释] consent 同意, 赞成, 答应。conviction 深信, 确信。compromise 妥协, 折中。command 命令, 指令; 掌握, 运用能力。

1. In this factory, suggestions often have to wait for months before they are fully _____.

A.admitted B.acknowledged　 C.absorbed　sidered

[答案] D. considered

[注释] considered 考虑; admit 承认; absorb 吸收。

[注意]acknowledge 1) (=agree or admit the truth of; confess) 承认, 供认; A. He acknowledged his mistake. (他承认了他的错误。) B. 接动名词 He acknowledged having been beaten. (他承认被打败了。) 2) (express thanks for) 致谢; A. Mary acknowledged the gift with a pleasant letter. (玛丽致函感谢馈赠的礼物。) B. His long service with the company was acknowledged with a present. (向他赠送礼品以感谢他长期来对公司的服务。)

24．(本题10分)

已知函数的单调递减区间为，单调增区间为和。

(1) 求得解析式

(2) 若试讨论关于得方程的实数根的个数(为自然数的底)

嘉兴市2008-2009学年度第二学期期末检测