26. __________ of the land in that district ___________ covered with trees and grass.

　 A. Two fifth; is　　 B. Two fifth; are　　 C. Two fifths; is　　 D. Two fifths; are

25. Jane __________ a lot of Spanish by playing with the native boys and girls.

　 A. picked up　　 B. took up　　 C. made up　　 D. turned up

24. It’s reported __________ some 100,000 college graduates will be chosen to assume village officials across the country in 5 years.

　 A. if　　 B. because　　 C. when　　 D. that

23. As they don’t have a child of their own, they’re going to __________ a little child.

　 A. adapt　 B. accept　　 C. receive　　 D. adopt

22. This classroom is __________ that one.

　 A. three times bigger as　　　 B. three times as big

　 C. three times the size of　　 D. as three times big as

21. I will __________ the money to you next week.

　 A. pay for　　 B. pay back　　 C. pay in　　 D. pay out

40.(6分)下图为某家族的某遗传病的系谱图(等位基因用 A 和 a 表示)，请分析回答：

( l )该遗传病属于　　　 (显性、隐性)性状，位于　　　 (常、 X 、 Y )染色体上。

　( 2 )如果 8 号表现正常，基因型是　　　 ，纯合子的概率是 　　　　　　

( 3 )如果 7 号同时患有色盲，8 号同时患两种病的概率是　　　 ，只患一种病的概率是　　　 。

39.(7分)下图的五个细胞是某种生物不同细胞分裂的示意图，(假设该生物的体细胞只有4条染色体)请回答以下问题：

(1)A、B、C、D、E中属于有丝分裂的是__________，属于减数分裂的是___________。

(2)B细胞有___________条染色体，有________个DNA分子，属于_________期。

(3)具有同源染色体的细胞有______________________________________。

(4)不具有姐妹染色单体的细胞有______________________________________。