668.(10-11，辽宁沈阳二中高二上10月月考)When ______ different cultures, we often pay attention only to the differences without noticing the many similarities.

A. comparing　 　　 B. being compared　　 C. compared　 　D. having compared

667.(10-11，辽宁大连23中高二第一次月考)________ you have bought the little dog, you should take good care of it instead of taking no notice of it, Nina.

A. For　　　 B. Now that　　　 C. After　　　 C. As soon as

666.(10-11，辽宁大连23中高二第一次月考)　　 ---Will you go to Betty’s birthday party?

---No, _______invited.

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

665.(10-11，江苏启东中学高二上阶段检测)_______ there was no conclusive evidence, most people thought he was the murderer.

A. After　 B. While 　　 C. If　　 　　　 D. Unless

664.(10-11，吉林东北师大附中高二第一次月考)- Did you remember to give Jenny the money?

- Yes. ________ I saw her, I’m sure.

A. As far as　　 B. In case　　　 　 C. The instant　 D. Now that

663.(10-11，吉林东北师大附中高二第一次月考)When ________ what made him a popular person, he said it was his personality.

A. asking B. asked　　　 　　 C. being asked　　　 　　 D. ask

662.(10-11，吉林长春外国语学校高二上第一次月考)I was reading attentively in my own room ________ suddenly he knocked at the door.

A. when 　　　 B. while　 C. then　 　　　　D. as

661.(10-11，吉林长春外国语学校高二上第一次月考)I’ll go to fight in the battle __________ you go or not .

A. no matter B. whether 　　 C. even though 　　 D. if

660.(10-11，湖南凤凰华鑫中学高二上第一次月考)When _____why he was late the boy kept silent.

A. asking　　　 B. ask　　　　　 C. asked　　　　　　 D. to ask

659.(10-11，河南郑州智林学校高二第一次月考)I was about to go shopping _______ the telephone rang.

　A. as　　　　　　 B. while　　　　　　 C. when　　　　　 D. as soon as