691] She reached the top of the hill and stopped ______ on a rock by the side of the path.

[译文] 她到达了小山顶，停了下来，在路边的岩石上休息。

　 A. to have rested 　 B. resting

　 C. to rest 　 D. rest

[答案及简析] C。 不定式表示目的。

690] The result of the experiment was very good, _____ we hadn’t expected.

[译文] 试验的结果很好，这是我们预先没有估计到的。

　 A. when 　 B. that

　 C. which 　 D. what

[答案及简析] C。 非限制性的定语从句，which代替前面的句子。

689] The heavy snow stopped the farmers ______ in the fields.

[译文] 大雪使农民不能在地里干活。

　 A. working 　 B. work

　 C. to work 　 D. works

[答案及简析] A。 stop sb. (from) doing sth. 阻止某人做什么。

688] -----I’m going to Beijing nest week. Do you have anything _____ there? ------ No, but thank you all the same.

[译文] --我下周要去北京，你有什么东西要带去么？　--没有。谢谢你。

　 A. taken 　 B. to take

　 C. taking 　 D. to be taken

[答案及简析] D。 该句的主语you发不出take的动作，故用被动形式。

687] He was named Robert _____ his father by mother.

[译文] 妈妈根据父亲的名字给他命名为Robert.

　 A. to 　 B. upon

　 C. after 　 D. under

[答案及简析] C。 name sb. after …"根据….的名字命名"。

686] Tom kept quiet about the accident ____ lose his job.

[译文] 汤姆对此事保持沉默是为了不丢掉工作。

　 A. so not as to 　 B. so as not to

　 C. so as to not 　 D. not so as to

[答案及简析] B。 so as to 中的to 是不定式符号，不定式的否定形式是将not放在不定式符号之前。

685] He wrote to his friends ______ information.

[译文] 他写信给他的朋友寻求信息。

　 A. asked for 　 B. to ask for

　 C. ask for 　 D. asks for

[答案及简析] B。 不定式表示目的。

684] Old McDonald gave up smoking for a while, but soon _____ to his old way.

[译文] Old McDonald戒烟了一阵子，然而不久又死灰复燃了。

　 A. returned 　 B. returns

　 C. was returning 　 D. had returned

[答案及简析] A。 时态题。连词but前后的时态应该基本一致。

683] What _____ to Joan last night? What did she cry for?

[译文] 昨天晚上Joan发生了什么事？　她为什么哭呀？

　 A. was happened 　 B. happened

　 C. was happening 　 D. had happened

[答案及简析] B。 昨天晚上发生了什么事，一般用过去时态；happen不能用被动语气。

682] _____ is the population of your country?

[译文] 你们国家的人口是多少？

　 A. How 　 B. what

　 C. How many 　 D. How many

[答案及简析] B。 就名词population提问"多少"时，可用what或how large。