20. It is 　　　　Du Li and Pang Wei married 　　　　they knew they are the first Olympic champion couple in our country .

　　　　 A. until, that　　 B. not until, which　 C.　 until , when　　　 D. not until, that

19.――It is really a heavy snow in early winter.　

　 ――　　　 .

A. So is it　　 B. No, it isn’t　　 C. I couldn’t agree more　　 D. As is it .

18.――Jenny looks very happy. She 　　　have won the first prize in the spoken English competition .

――I guess so. She speaks English fluently as if she were an American.

A. should　　　 B. could　　　 C. might　　　 D. must

17. Housing sales are 　　　　in some of the hardest-hit markets.　

　　　　　 A. picking out　　 B. picking up　　 C. picked up　　 D. picked out　

16. 　　　hands with Obama ,the college students ,　　 in the first row , felt extremely　　 .

　　　　　 　A. Shaking, seated, excited　　 　B. Shaken, sitting, excited

C. Shaken , seated ,exciting　　 　D. Shaking, sitting exciting

15. Most people will find it safe to surf the internet ______ they visit the illegal network .　

　　　 A. why　　　　 B. how　　　　　 C. unless　　　　 D. where

14. The famous scientist Qian Xuesen passed away in November, _______is really a great loss to our country.　

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

13. Liu xiang is reported to 　　　　three champions since he 　　　his foot injury this year.

A. win, recover from　　　　　　 　B. have won, recovered　

C. have 　won , recovered from　　　 D. win, recover