4.如右图为植物光合作用强度随光照强度变化的坐标曲线图,分析下列叙述,不正确的是( )
A.a点叶肉细胞产生ATP的细胞器只有线粒体,b点植物
光合作用强度与细胞呼吸作用强度相等
B.已知某植物光合作用和细胞呼吸最适温度分别为25℃
和30℃,如图表示该植物处于25℃环境中,则将温度提
高到 30℃时,a点上移,b点右移,d点上移
C.当植物缺镁时,b点将向左移
D.如果该图表示阴生植物,若改绘成阳生植物,则b
点右移
3.下列对于光合作用的叙述中,正确的是( )
A.胡萝卜素、叶黄素在光合作用中的作用是吸收光能、转换光能
B.光反应是把光能变成电能,暗反应是把电能变成化学能
C.在相同光照条件下,各种植物的光合作用强度可能不同
D.大棚中人工补充光照越强,蔬菜产量越高
2.下图表示人体通过体液免疫消灭破伤风杆菌外毒素的过程,下列相关叙述正确的是
A.细胞2、细胞3均起源于造血干细胞 ,其中细胞2在骨髓中发育
B.④过程高尔基体活动较旺盛
C.所有细胞中仅细胞4中含有合成物质a的基因
D.细胞4和细胞5具再次识别伤风杆菌外毒素的作用
选择题一(本题包括21小题,每小题6分,共126分,每小题只有一个选项符合题意)
1. 下图是氮循环以及氮在生物体内的转化过程示意图,下列说法错误的是( )
A.①过程的主要途径是生物固氮
B.完成②过程的生物可促进氮循环,但不利于土壤保持肥力
C.完成③过程的生物的新陈代谢类型与根瘤菌相同
D.完成⑦⑧过程的生物在生态系统的成分中属于分解者
第三节 书面表达(满分25分)
假如你叫李华,你校同学正在就“高三学生要不要参加体育锻炼” 这一主题展开讨论,请根据下面所给的信息,给某英文报社写一封信,介绍讨论情况,并谈谈你的看法。
赞成(55%) |
反对(45%) |
1.应该每天进行体育锻炼,如:做早操、打乒乓球、打篮球等。 |
1.锻炼浪费时间。 |
2.锻炼能增强体质,减少疾病。 |
2.锻炼后很兴奋,难以很快投入学习。 |
3.锻炼能使大脑休息,使学习效果更好。 |
3.锻炼使人疲劳,可能会受伤。 |
注:1. 短文词数100词左右。 2. 内容充实,结构完整,语意连贯。
3. 书写须清晰、工整。 4. 体育锻炼 physical exercise
第一节 单项选择题(共15小题,每小题1分,满分15分)
21.Every winter many people went to Jinfoshan to see the snow covering top of it, which is so beautiful sight.
A.the; a B./; the C.a; the D.the;/
22. ---Where did Mary’s parents buy the beautiful vase?
---It was in the same village______they spent their holiday last year.
A. that B. when C. as D. where
23. We should talk about the things________the childeren’s understanding in a simple way.
A. over B. beyond C. above D. under
24. For us Senior Three students, believing that our hard work will______can strengthen our confidence.
A. take off B. pay off C. keep off D. get off
25. ---Oh, it’s nine o’clock! I have to leave for the airport now.
---Don’t worry. As you are our_______guest,I will give you a ______for free.
A. normal; hand B. old; drive C. regular; lift D. usual; help
26. _______that they lost the game, tears came down Kate’s face.
A. On hearing the news B. When heard the news
C. The moment she heard the news D. While hearing the news
27. The boss was very glad that the new comer had finished than 50 percent of the work in two hours .
A.less or more B.more or less C.no less D.no more
28. He is so willing to help others that he seldom,_______,refused the people who turned to him.
A. if never B. if ever C. if not D. if any
29. We all know it will be next June _______we can really have a rest.
A. when B. before C. since D. until
30. We should also care about the children from the earthquake-stricken area after_______seemed to have returned to normal.
A. it B. what C. that D. Which
31. “_______,but Jim made the same mistakes again. ”complained his mother.
A. Although he was told many times B. Having been told many times
C. As he was told many times D. He had been told many times
32. ______, please try your best to solve the problem in time.
A. Ought you get into trouble B. Must you get into trouble
C. Can you get into trouble D. Should you get into trouble
33. ---Jane, have you finished your paper?
---No,I________my sister with her homework all the morning.
A. help B. have been helping C. helped D. was helping
34. ---Tom, it’s time that you _______your own clothes.
---I would rather you _______that for me just like before.
A. washed; had done B. wash; have done
C. washed; have done D. wash; had washed
35. ---Can you accompany your little brother to the post office now?
---_________, if he is ready.
A. By all means B. No way C. My pleasure D. In no case
21.(12分)已知函数和.其中.
(1)若函数与的图像的一个公共点恰好在x轴上,求的值;
(2)若函数与图像相交于不同的两点A、B,O为坐标原点,试问:△OAB的面积S有没有最值?如果有,求出最值及所对应的的值;如果没有,请说明理由.
(3)若和是方程的两根,且满足,证明:当时,.
命题:杨明飞
审题:王 明
绝密★启用前
重庆一中高2010级高三上期第一次月考
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