21.-Would you mind if I keep a dog in our house?
-Yes, ______.
A. you could B. go ahead
C. I do D. my pleasure
22. If it ____tomorrow, we won't go to the school farm. A. is to rain B. will be raining C. will rain D. rains
23. I really appreciate ______ me to repair the bike.
A. you to help B. you helping
C. that you help D. that you are helping
24. Because of the latest technology, the factory produced ______ cars last year as the year before.
A. as twice many B. as many twice
C. twice as many D. many as twice
25. All of the students were ______ when they heard the ______ news that we would not go climbing this weekend.
A. disappointed; disappointing B. disappointing; disappointed
C. disappointed; disappointed D. disappointing; disappointing
26. ______the key, he stayed outside his place all night and fell ______ on the floor.
A. As a result he lose; sleeping B. Since he lost; sleepy
C. As a result of him losing; asleep D. As he lost; aslept
27. The manager didn't ask him to come. _______, he was fired. A. In other words B. In a word C. In many ways D. In any way
28. I won’t be free this morning. I ______ my friend off.
A. am seeing B. would see C. see D. saw
29. We _____each other since I left Shanghai. A. haven't seen B. hadn't seen
C. didn't see D. wouldn't see
30. The dictionary ______ for his studies, although at first he didn’t want to buy it because of its high price. A. is proved useful B. proves useful C. is proved usefully D. proves usefully
31.The mother was glad that her daughter ______ great progress in the last term. A. was making B. makes C. has made D. had made
32. Most people expect to be ______ control of everything, but life doesn’t go as it is planned. A. with B. out C. in D. over
33. To find the street where I lived in my childhood is no easy task because the city ______ so rapidly all these years.
A. is changing B. has changed
C. will have changed D. will change
34. I forgot ever ______ her before, but she still remembered my name.
A. having met B. to have met C. to meet D. meeting
35. He said that honesty _____the key to success. A. was B. will be C. is D. is being
第二节:完形填空。从短文后所给各题的四个选项中选出一个能填入空格的最佳答案,每小题1.5分,共30分。
There are different social customs in different parts of the world. In India, oxen are worshipped 36 God. No one is 37 to hurt even a hair of an ox. If you travel in India, you can 38 find oxen walking slowly in the streets, but nobody dares to 39 them up.
If you 40 in India, you have to keep your 41 wide open. You must be very careful wherever you see oxen. Try every means 42 them. Otherwise you’ll 43 get into trouble.
People often see drivers are 44 if the ox is on the road. They know “ 45 first”. If you want 46 an Indian temple, 47 yourself carefully in advance. You can’t use anything 48 from oxen, neither a coat nor a bag nor shoes. If you use them 49 , the Indians may think that you 50 their feelings.
When you talk to an Indian, you should 51 what you say. You’d better not refer to things that have something 52 with oxen. Once in New Delhi, an 53 professor asked a foreign officer: “ 54 is your favorite food ? ”“Beef steak. ”replied the officer. 55 this, the professor became angry.
36. A. by B. like C. with D. as
37. A. promised B. ready C. allowed D. believed
38. A. easily B. hardly C. finally D. seldom
39. A. wake B. give C. send D. speed
40. A. take a walk B. make a visit C. drive D. dive
41. A. eyes B. mouth C. car’s window D. car’s door
42. A. protecting B. not to hurt C. not to touch D. training
43. A. simply B. possibly C. surely D. really
44. A. prevented B. excited C. welcome D. stopped
45. A. Policemen B. Drivers C. Oxen D. Cows
46. A. to build B. to enter C. visiting D. designing
47. A. enjoy B. make C. do D. examine
48. A. learned B. made C. came D. given
49. A. mistaken B. mistake C. very well D. by mistake
50. A. wound B. beat C. hurt D. hit
51. A. take back B. pay attention to
C. pay money for D. put your heart into
52. A. do B. to do C. doing D. done
53. A. English B. Italian C. American D. Indian
54. A. Which B. What C. Where D. How
55. A. Hearing of B. Listen to C. Hearing D. Listened to
3、(8分)细胞是多种化学元素和化合物构成的生命系统。通过分析这个系统的物质组成有助于认识这个最基本的生命系统。请分析回答下列问题:
(1)细胞中的水以结合水和自由水两种形式存在,细胞代谢越旺盛,其中结合水与自由水的比值会_______________。
(2)参与细胞内复杂化合物的组成,维持细胞形态、酸碱平衡及其他一些生命活动都具重要作用的物质是________________。
(3)下图表示了细胞内某些重要化合物的元素组成及相互关系:
Ⅰ.图中X、Y代表的化学元素分别是 ;组成分子a的含氮碱基种类共 种。
Ⅱ.根据化合物中元素组成的不同,通过同位素标记法可以研究化合物在生物体中的作用。如在“噬菌体侵染大肠杆菌”的实验中,要区分蛋白质和DNA在生物遗传中的作用,一般要对DNA的_______元素进行标记。
Ⅲ.现从某种真核细胞中提取出大量枋糖体放入培养液里,再加入下列几种有机物:
其中的氮原子已被15N标记,模拟化合物B的合成。假设培养液里含有核糖体完成其功能所需的一切物质和条件。
其中实验中所用的培养液相当于细胞内的__________________。上述五种化合物中能作为原料合成化合物B的是___________(填序号)。若实验中检测到某一多肽含20个15N,则该肽最少有________个肽键。
2.(8分)下图分别是蓝藻(左图)和衣藻(右图)的结构模式图。请据图回答:
(1)两者在结构上的相同点为 。
(2)两者在结构上的不同点为 。
(3)两者中属于真核细胞的是 。
(4)它们的营养方式分别为 ,因为它们都有 ,可进行光合作用,利用无机物制造 。
(5)根据结构上的相同点,可得出的结论是 。两者在进化上较原始的是 。
1、(7分)光学显微镜是中学生最常用的实验仪器。下图中7mm、0.5mm表示观察清楚时物镜与观察物之间的距离。请回答下列问题:
(1)上图表示显微镜的_______镜,在观察黑藻细胞质流动的实验中,应先用图中 镜观察。
下图示光学显微镜的一组镜头,目镜标有5×和15×字样,物镜标有10×和40×字样。请看图回答:
(2)要仔细观察叶绿体的形态时,显微镜的目镜、物镜及其与盖玻片间的距离组合为 _________(用标号作答)。此时放大倍数为 。
(3)一个细小物体若被显微镜放大50倍,这里“被放大50倍“是指该细小物体的( )
A.体积 B.表面积 C.像的面积 D.像的长度或宽度
(4)在观察中,③与④的显微视野中比较明亮的是 。
(5)若在低倍镜下发现有一异物,当移动装片时,异物不动,转换高倍物镜后,异物仍可观察到,此异物可能存在于( )
A.物镜上 B.目镜上 C.装片上 D.反光镜上
25.细胞内的核糖主要分布在 ( )
(A)细胞质 (B)细胞核 (C)叶绿体 (D)线粒体
24.纤维素、脂肪酶和植物蜡都含有的元素是 ( )
(A)C、H、O、N (B)C、H、O、N、P (C)C、H、O (D)C、H、O、N、P、S
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