2、下列动物中，真正属于鱼的动物是（) 

A.章鱼B.鲸鱼C.甲鱼D.鲫鱼

41.下图甲是“观察植物细胞”实验中所使用的普通光学显微镜结构示意图，目镜的放大倍数是10×，两个物镜的放大倍数分别是10×和40×。根据图回答问题（横线上填写文字、括号填写编号)（共7分) 

（1)某同学在观察装片前首先进行对光，转动转换器，使图中的物镜[]对准通光孔。然后调整光圈，并转动[]，使光线反射到镜筒内，直到看到白亮的圆形视野为止。 

（2)对光成功后，这位同学在显微镜下观察到如乙图所示的洋葱片叶表皮装片的情况。此时物像放大倍数为倍。视野中出现的⑧很可能是。若将视野中的物像⑨移到视野的中央，应将装片向移动。 

（3)若物像模糊不清，可转动图甲中的[]使物像更清晰。

It was in autumn. A young woman was ill.  She   1   in the hospital. There was a tree   2   her room. She saw the leaves fall down. Day after day, there were less and less leaves on the tree. The woman was very   3  . She didn’t want to eat or drink, and she didn’t want to talk. The doctor asked her to   4   and take a walk. She wouldn’t do that. She became worse day by day. One day she said, “When the last leaf falls down, I will die,   5  .”

An old artist knew that. He decided to help this woman. One night, all yellow   6   fell down. The artist painted a green and yellow leaf, then put it in the tree. The next morning,   7   the woman looked out of the window and saw the last leaf, she was filled with   8  . She wanted to be alive. She didn’t want to fall down like other leaves. From then on, she became   9   and lived a long time. 

Don’t   10   your hope at anytime. 

A. played B. stayed C. studied D. workedA. outside           B. inside         C. from          D. underA. glad B. relaxed C. sad D. interestedA. fall asleep B. get ready C. hurry up D. get upA. too B. also C. either D. neitherA. flowers B. plants C. leaves D. trees A. if B. before C. until D. whenA. hope B. dream C. interest D. happinessA. worse and worse B. better and better C. harder and harder   D. thinner and thinnerA. give out B. give in C. give up D. give away

I was once a fat girl . I weighed 336 pounds and looked as big as my fridge. I was never   1    it. But one day I had a medical examination（体检）. The   2   told me that I was having hea rt trouble. It   3   me up. I began to feel nervous. Then I decided to do something!

In a year and five months, I   4   104 pounds. What a great thing I did ! I didn’t have any expensive food, medical treatment（治疗）or camp-style（训练营式的）exercise. What was the secret to my   5  ？ 

First I looked through the Internet for do-it-yourself   6   that people could follow on losing weight. Of course I saw countless ads which try to get me to buy their products. But I bought nothing. The only thing I did was to change my bad   7   . The following are what I have done. You can try these. Stop drinking something with too much sugar in it.   8   sweet cakes. Eat green vegetables. Use only vegetable oil. Never eat after 6:30 pm. Also, do light exercise for 15 to 20 minutes five days a week. 

Then I kept doing what I should do. People sometimes say,“You don’t need to tell me   9   to do. I know it already!”But the fact is that knowing what to do and doing what you know are totally   10   . The important thing is to know what to  do and then just keep doing it.

A.excited about     B.worried about    C.proud of     D.happy withA.doctor           B.friend           C.mother      D.teacher

3.A.gave            B.cheered         C.dressed      D.woke

4.A.borrowed        B.lent            C.lost         D.got

A.happiness       B.success           C.kindness     D.richness

6.A.advice          B.news           C.food         D.medicine

7.A.grades          B.look            C.wish        D.habits

8.A.Accept         B.Bring           C.Refuse       D.Make

A.how           B.what            C.why         D.whether

10.A.easy           B.difficult          C.similar       D.different

42.右图为种子呼吸作用和植物光合作用实验图，请根据图回答问题。（共10分) 

（1)瓶中种子萌发时，种子的作用会加强，致使玻璃瓶内气体浓度增大，从而使玻璃罩内幼苗的作用增强。种子在萌发过程中，如果用手触摸盛有种子的玻璃瓶，会感到。 

（2)如果把漏斗和玻璃管阀门关闭，幼苗的作用逐渐减弱，原因。 

（3)根据上述实验现象，可以看出光合作用和呼吸作用的密切关系，请完成呼吸作用和光和作用的反应式。光合作用的反应式：（)+（)（)（)+氧气叶绿体呼吸作用的反应式：（)+（)（)+（)+能量 

3.在观察蚯蚓的过程中，必须保持蚯蚓的体表湿润，其原因是（)

A.蚯蚓必须生活在水中 

B.使蚯蚓的呼吸能正常进行 

C.以此增加蚯蚓的灵敏度 

D使蚯蚓完成受精作用