2、跳绳是冬季的一种健身运动，旁人看起来似乎很简单，然而亲自跳起来就会感到运动量是相当大的。

有位同学对此作了专门研究：跳绳者的质量是50kg，跳绳者的重心高度随时间变化的情况如图所示。根据所给条件可估算出此跳绳者在l min内做功的平均功率为　　W。(g=10N/kg)

第二节　　 开放作文 (15分)

One possible version:

In the picture, between two closely-lcated buildings grows a big tree. Unlike most trees, this one bends in the middle , struggling all the way up to get more sunshine. The picture reminds me of those who secceed in unfavorable conditions. Faced with difficulties, they never give up but try their best to find a way out. Life can be hard. But if we have the courage and determination, we will finally get the sunshine we want as the tree in the pictrue does.

第一节　　 (情景作文(20分)

　One possible version:

　　　 Lst weekend, I helped my grandparents prepare their trip to Beidaihe. On Saturday morning, together with my grandparents, I seached the Internet for the train schedule, the weather in Beidaile, and some hotel information. In the afternoon, I went to the train station and managed to buy two tickets for my grandparents although there was a long queue. After dinner, I packed into the suitcase the things my grandparents reed, such as clothes, glasses, an unbrella, and a map. The next morning, I went to the station to see them off. Waving goodbye to them on the platform, I felt happy for them and wished them a safe jouney.

第二节 完形填空 (共20小题：每小题1.5分，共30分)

36-40：BACDA　 41-45：DCBDD　　 46-50：ACBCA　　 51-55：BBDAC

第一节 单项填空 (工5小题：每小题1分，共15分)

21-25：AABDA　　 26-30：DBACD　　 31-35：CBBDC

第三节 (共5小题：每小题1.5分，共7.5分)

每小题1.5分。如出现拼写错误不计分；出现大小写、单复数错误扣0.5分；如每小题超过一个词不计分。

16. wrong　　　　　　 17. 3C56/3c56　　 18. system　　　　　　　　　 19. special　　　　　　 20. credit

第二节 (共10小题：每小题1.5分，共15分)

6-10：BAACB　　 11-15：CCABB

第一节 (共5小题：每小题1.5分，共7.5分)

1-5：BAACB