49. C. 因为是two ballpens, 并且定语从句的谓语writes是单数概念。因此，C是正确选项。

50. B. 本句话中，主句的主语是all,为抽象概念。因此，其谓语应用单数的has been。关系代词that引导定语从句，并在从句中作主语。

09定语从句

1. (09全国II) My friend showed me round the town, ______ was very kind of him.

A. which B. that C. where D. it

2. (2009安徽卷)Many children， parents are away working in big cities，are taken good care of in the village.

A.their B.whose C.of them D.with whom

3. (2009北京卷)–What do you think of teaching, Bob?

–I find it fun and challenging. It is a job ___ you are doing something serious but interesting.

A. where B. Which C. When D. that

4. (2009福建卷)It’s helpful to put children in a situation _______ they can see themselves differently. A. that B. when C. which D. where 5. (2009湖南卷)I was born in New Orleans, Louisiana, a city ______ name will create a picture of beautiful trees and green grass in our mind.

A. which B. of which C. that D. whose

6. (09江苏卷)Because of the financial crisis, days are gone _____ local 5-star hotels charged 6,000 yuan for one night.

A. if B. when C. which D. since

7. (09辽宁卷)They’ve won their last three matches, ________ I find a bit surprising actually.

A. that B. when C. what D. which

8. (09全国I)She brought with her three friends, none of I had ever met before.

A. them B. who C. whom D. these

9. (09全国II) My friend showed me round the town, ______ was very kind of him.

A. which B. that C. where D. it

10. (09山东卷)Whenever I met her, _________ was fairly often, she greeted me with a sweet smile.

A. who B. which C. when D. that

11. (09陕西卷)Gun control is a subject Americans have argued for a long time .

A. of which B. with which C. about which D. into which

12. (09上海卷)Mozart’s birthplace and the house ______ he composed “The Magic Flute” are both museums now.

A. where B. when C. there D. which

13. (2009四川卷)She’ll never forget her stay there ________ she found her son who had gone missing two years before.

A. that B. which C. where D. when

14. (2009天津卷)A person ______ e-mail account is full won’t be able to send or receive any e-mails.

A. who B. whom C. whose D. whoever

15. (2009天津卷)I travel to the Binhai New Area by light railway every day, _____ do many businessmen who live in downtown Tianjin.

A. as B. which C. when D. though

16. (2009浙江卷)I have reached a point in my life I am supposed to make decisions of my own.

A which B where C how D why

17. (2009重庆卷)Life is like a long race _____we compete with others to go beyond ourselves.

A. why B. what C. that D. where

09名词性从句

1. (2009安徽卷)A good friend of mine from I was born showed up at my home right before I left for Beijing.

A.how B.whom C.where D.which

2. (2009安徽卷) a certain doubt among the people as to the practical value of the project.

A.It has B.They have C.It remains D.There remains

3. (2009北京卷)At first he hated the new job but decided to give himself a few months to see ___ it got any better.

A. when B. how C. why D. if

4. (2009福建卷)--Your mum is very kind. --Yeah, My mum is pretty considerate, you know what ,she always arranges everything around me. A. she means B. you mean C. I mean D. we mean 5. (2009湖南卷)She is very dear to us. We have been prepared to do ______ it takes to save her life.

A. whichever B. however C. whatever D. whoever

6. (09江苏卷) --- Hi, Terry, can I use your computer for a while this afternoon?

--- Sorry. _____.

A. It’s repaired B. It has been repaired C. It’s being repaired D. It had been repaired

7. (09江苏卷)Many young people in the West are expected to leave _____ could be life’s most important decision --- marriage --- almost entirely up to luck.

A. as B. that C. which D. what

8. (09江西卷)The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.

A. what B. which C. that D. though

9. (09全国I)Could I speak to is in charge of International Sales please?

A. who B. what C. whoever D. whatever

10. (09山东卷)The little girl who got lost decided to remain _______she was and wait for her mother.

A. where B. what C. how D. who

11. (09陕西卷)The how to booke can be of help to wants to do the job.

A who B whomever C no matter who D whoever

12. (09上海卷)It is not immediately clear _______ the financial crisis will soon be over.

A. since B. what C. when D. whether

13. (09上海卷)As a new diplomat. he often thinks of ______ he can react more appropriately on such occasions.

A. what B. which C. that D. how

14. (2009四川卷)News came from the school office ________Wang Lin had been admitted to Beijing University. A. which B. what C. that D. where

15. (2009四川卷)— I wonder ________ you’ll water this kind of flower.

—Every other day.

A. how often B. how long C. how soon D. how much

16. (2009天津卷)It is obvious to the students ______ they should get well prepared for their future.

A. as B. which C. whether D. that

17. (2009浙江卷)—Is there any possibility you could pick me up at the airport ?

—No problem

A. when B. that C. whether D. what

18. (2009重庆卷)We should consider the students’ request _______the school library provide more books on popular science. A. that B. when C. which D. where

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