26. I’ll never trust such a man ______ you described.　

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

25. ------- What do you think of Harry, our new roommate?

　 　------- I am not sure, but he is always asking ______ questions.

A. a great many of 　B. a great many　 C. a great number　 D. a large amount of

24. I’m told that you are going to Canada to have a three-month further study. Don’t let such a good chance to improve your English _____ through your fingers.

A. ski　 B. spread 　C. slip　　 D. skip

23. Many students listened to the lecture, but I wondered how much they ______.　

A. took out　　　　 B. took up　　　　 C. took off　　　　　 D. took in

22. The police looked into the case carefully and found the thief had entered the house ______ a ladder.

A. by the means 　　B. by all means　　 C. by ways of　 D. by means of

21. It is _____that he has been addicted to the drugs and has difficulty quitting it.

A. obviously　　　 B. apparently　　　 C. possibly　　　　 D. likely 　

第二節(jié) ：共5小題(滿分5分)

聽下面一段對(duì)話，請(qǐng)根據(jù)題目要求，從聽到的內(nèi)容中獲取必要的信息，填入16-20的空格中。錄音讀兩遍，每遍之間停頓45秒鐘。聽完后你有兩分鐘的作答時(shí)間。

45．(10分)已知果蠅中，灰身與黑身為一對(duì)相對(duì)性狀(顯性基因用B表示，隱性基因用b表示)；直毛與分叉毛為一對(duì)相對(duì)性狀(顯性基因用F表示，隱性基因用f表示)。兩只親代果蠅雜交得到以下子代類型和比例：

請(qǐng)回答：

(1)控制灰身與黑身的基因位于__________；控制直毛與分叉毛的基因位于_________。

(2)親代果蠅的表現(xiàn)型為♀：_______；♂：_________。

(3)親代果蠅的基因型為_________、_________。

(4)子代表現(xiàn)型為灰身直毛的雌蠅中，純合子與雜合體的比例為_________。

(5)子代雄蠅中，灰身分叉毛的基因型為_______、_________；黑身直毛的基因型為

44．(10分)下圖是患甲病(顯性基因?yàn)锳，隱性基因

為a)和乙病(為伴性遺傳病，顯性基因?yàn)锽，隱

性基因?yàn)閎)兩種遺傳病的系譜圖，據(jù)圖回答：

(1)由遺傳圖解可判斷出甲病為常染色體上______性遺傳病，其致病基因不可能在X染色體的理由是______________________________________________________。

　 (2)Ⅰ₂的基因型為______________。Ⅲ₂的基因型為______________。

　 (3)假設(shè)Ⅲ₁和Ⅲ₅結(jié)婚生了一個(gè)男孩，則該男孩患一種病的概率為________，所以我國(guó)婚姻法禁止近親間的婚配。