27. I searched the website. Unfortunately, the movie that I had seen many times was no longer _____.

A. valuable 　　　　B. reliable　　 　　C. available　 　　D. incredible

26. There is no need ________any mpre about why different words are used to describe the four countries:England,Wales,Scotlan and Northern Ireland.

　 　A. debating　 　　　B. to debate　 　　　C. debated　 　　D. to debating

25．_______you put the sun there did the movements of the other planets in the sky make sense.

　 　A. If only　 　　　B. If so　 　　　　　C. Only if　　 　　　　　　D. As long as

24. I made a call to my parents yesterday. To my disappointment, ______of them answered it.

A. either　　　 　　　 B. none　　 　　　　　 C. neither 　　　　　　 D. nobody

23. Mr. Smith was quite satisfied with his new flat______ beside the West Lake Park and decided to settle down there.

　 　A. located　 　　B. locating　 　　　　C. to locate　 　　　　　D. locate

22. -I’m sure Andrew will win the first prize in the final.

-I think so. He_______ for it for months.

A. is preparing　　 　 B. was preparing C. has been preparing　　 D. had been preparing

21. This book tells ________ life story of John Smith, who left ______ school and worked for a newspaper at the age of 16.

A．the; the　 　　 B．a; the　　 　　 C．the; 不填　　 　 D．a; 不填

35．(16分)果蝇的黄身与灰身是受一对等位基因(D、d)控制的(显隐性关系未知)。一只黄身雌果蝇的父本也是黄身型，但它的母本和同胞中的雌雄果蝇却是灰身型。其性状分离符合遗传的基本定律。

(1)如果控制体色的基因位于X染色体上，则控制体色的基因型有　　　　　 种。

(2)若这对等位基因位于常染色体上，则：

①这只黄身雌果蝇的基因型与父本基因型是否一样，　　　　　 ，理由是　　　　　　 。

②若用回交法(子一代和两个亲本的任一个进行杂交的方法叫做回交)判断出身色性状的显隐关系，你采用的交配组合方式为　　　　　　　　　　　　　　　 。

(3)这对等位基因是否可能位于X染色体上？_________，请用遗传图解和文字加以说明。

2010-2011学年上学期第一次月考