摘要：Step 1 Review 第一步 复习 1.T:I exercise every day and my favorite sport is swimming. My favorite sports player is Luo Xuejuan. She is from- Can you talk about your favorite sports and sports players? Who would like to have a try? S1: My favorite sport is basketball. My favorite sports player is Yao Ming. He is from- S2: My favorite sport is table tennis. My favorite sports player is Deng Yaping. S3:My favorite sport is- My favorite sports player is- He/She is from- My favorite sport is- My favorite sports player is- He/She is from- T: Pretty good! Who would like to introduce your exercise timetable? S4:I get up at 5∶30 in the morning. Then I run for about half an hour. S5:I get up at 6∶00 in the morning. Then I go out for a walk. S6:I get up very late. So I don’t do morning exercises. But in the afternoon, after class, I play soccer with my good friends. S7: - T: Very good. Now, who can tell me why you do exercise? S8: I want to be strong. S9: I want to be healthy. S10: I want to be tall. S11: I want to be a sports player like Yao Ming. S12: - T: Excellent! Do you know why I exercise every day? Can you guess? S13: I think you want to be healthy. S14: I think you want to keep fit. S15: I think you want to be thinner. T: Yes, you are all right. I do exercise because Beijing will host the 2008 Olympics. We must exercise and learn English well.
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如图甲表示某生物膜结构，图中A、B、C、D、E、F表示某些物质，a、b、c、d表示物质跨膜运输方式。图乙和图丙表示物质运输曲线，请据图回答：
（1）若图甲是癌细胞的细胞膜，则膜上含量较正常细胞减少的物质是[ ] 。
（2）若图甲是线粒体膜，b和c过程运输的气体分别是 。b、c运输方式符合图 所表示的物质运输曲线。
（3）若图甲表示人体红细胞膜，则表示Na＋、K＋运输的分别是图中 。Na＋、K＋的运输方式符合图 所示曲线。
（4）已知红细胞吸收葡萄糖是协助扩散，而有人认为小肠上皮细胞以主动运输的方式吸收葡萄糖，请设计实验加以确定。
①实验步骤：
第一步：取甲、乙两组生理状况相同的小肠上皮细胞，放入适宜浓度的含有葡萄糖的培养液中。
第二步：甲组细胞给予正常的呼吸条件， 。
第三步： 。
②预测实验结果并分析：
a．若甲、乙两组细胞对葡萄糖的吸收速率基本相同，则 。
b． 。 查看习题详情和答案>>
（1）若图甲是癌细胞的细胞膜，则膜上含量较正常细胞减少的物质是[ ] 。
（2）若图甲是线粒体膜，b和c过程运输的气体分别是 。b、c运输方式符合图 所表示的物质运输曲线。
（3）若图甲表示人体红细胞膜，则表示Na＋、K＋运输的分别是图中 。Na＋、K＋的运输方式符合图 所示曲线。
（4）已知红细胞吸收葡萄糖是协助扩散，而有人认为小肠上皮细胞以主动运输的方式吸收葡萄糖，请设计实验加以确定。
①实验步骤：
第一步：取甲、乙两组生理状况相同的小肠上皮细胞，放入适宜浓度的含有葡萄糖的培养液中。
第二步：甲组细胞给予正常的呼吸条件， 。
第三步： 。
②预测实验结果并分析：
a．若甲、乙两组细胞对葡萄糖的吸收速率基本相同，则 。
b． 。 查看习题详情和答案>>
（10分）植物具有向重力生长的特性，下列是研究根向重力生长机理的两个实验。
实验一：将空白琼脂和含EDTA的琼脂做成帽状，分别套在甲、乙两组玉米胚根的根冠外（示意图如下）。提示：EDTA的作用是去除与其临接部位的 Ca2+。
将胚根水平放置培养一定时间后，观察到甲组胚根向重力（下）生长，乙组胚根水平生长。根据上述实验结果，得出实验结论： 。
实验二：水平放置的胚根弯曲向下生长，与根冠近地侧的Ca2+浓度明显高于远地侧有关。研究表明，根总是朝着Ca 2+浓度高的方向弯曲生长。为验证这一结论，有人设计了下列实验方案。请根据提供的实验材料和用具，写出第二步及以后的实验步骤和实验结果，并回答问题。
（1）实验材料和用具：胚根等长的萌发玉米种子，空白琼脂帽，含EDTA的琼脂帽，上面部分含Ca2+的琼脂帽（水平方向），培养皿等。
（2）实验步骤：
第一步：取若干个培养皿，在每个培养皿中放置适量的萌发玉米种子，按实验一中乙组的方法处理胚根一定时间后，移去根冠外的琼脂帽。然后将培养皿平均分成两组，编号为 A组、B 组。
第二步： 。
第三步： 。
（3）实验结果： 。
（4）科学家进一步证实，根冠中生长素的分布受Ca2+浓度影响，当胚根水平放置时，重力诱导Ca2+向根冠下侧移动，导致近地侧的生长素浓度比远地侧高。请分析胚根的生长素分布与向重力生长的关系： 。 查看习题详情和答案>>
实验一：将空白琼脂和含EDTA的琼脂做成帽状，分别套在甲、乙两组玉米胚根的根冠外（示意图如下）。提示：EDTA的作用是去除与其临接部位的 Ca2+。
将胚根水平放置培养一定时间后，观察到甲组胚根向重力（下）生长，乙组胚根水平生长。根据上述实验结果，得出实验结论： 。
实验二：水平放置的胚根弯曲向下生长，与根冠近地侧的Ca2+浓度明显高于远地侧有关。研究表明，根总是朝着Ca 2+浓度高的方向弯曲生长。为验证这一结论，有人设计了下列实验方案。请根据提供的实验材料和用具，写出第二步及以后的实验步骤和实验结果，并回答问题。
（1）实验材料和用具：胚根等长的萌发玉米种子，空白琼脂帽，含EDTA的琼脂帽，上面部分含Ca2+的琼脂帽（水平方向），培养皿等。
（2）实验步骤：
第一步：取若干个培养皿，在每个培养皿中放置适量的萌发玉米种子，按实验一中乙组的方法处理胚根一定时间后，移去根冠外的琼脂帽。然后将培养皿平均分成两组，编号为 A组、B 组。
第二步： 。
第三步： 。
（3）实验结果： 。
（4）科学家进一步证实，根冠中生长素的分布受Ca2+浓度影响，当胚根水平放置时，重力诱导Ca2+向根冠下侧移动，导致近地侧的生长素浓度比远地侧高。请分析胚根的生长素分布与向重力生长的关系： 。 查看习题详情和答案>>
阅读短文，在其后空白处写出各单词的正确形式。单词的第一个字母已经给出。
The worst traveler in the world was Paul of San Francisco. Once he f____【小题1】 from the U.S. to his hometown in Italy to see someone at home. The plane made a one-hour stop to get oil at an airport in New York. Paul thought he was in Rome. C____【小题2】, he got off the plane.
When nobody was there to meet him, Paul thought maybe the heavy t____【小题3】 made his friends late. While looking for their address, Paul found that the old “Rome”had changed a lot. He found many high m____【小题4】 buildings instead of old ones. He also found that many people spoke English but not Italian and that many street signs were w____ 【小题5】 in English.
Paul knew very l____【小题6】 English. So he asked a policeman in Italian the way to the bus station. He happened to meet a policeman who was also born in Italy and answered in the same l____【小题7】.
After twelve hours’ traveling round on a bus, the driver handed him over to a____【小题8】 policeman. But this time, this policeman could only speak English. So paul asked the policeman why the Rome police employed（雇佣）so many people who spoke English as policemen.
Paul didn’t b____【小题9】 he was in New York when he was told so. To get him on a plane to Italy, he was s____【小题10】 to the airport in a police car. 查看习题详情和答案>>
The worst traveler in the world was Paul of San Francisco. Once he f____【小题1】 from the U.S. to his hometown in Italy to see someone at home. The plane made a one-hour stop to get oil at an airport in New York. Paul thought he was in Rome. C____【小题2】, he got off the plane.
When nobody was there to meet him, Paul thought maybe the heavy t____【小题3】 made his friends late. While looking for their address, Paul found that the old “Rome”had changed a lot. He found many high m____【小题4】 buildings instead of old ones. He also found that many people spoke English but not Italian and that many street signs were w____ 【小题5】 in English.
Paul knew very l____【小题6】 English. So he asked a policeman in Italian the way to the bus station. He happened to meet a policeman who was also born in Italy and answered in the same l____【小题7】.
After twelve hours’ traveling round on a bus, the driver handed him over to a____【小题8】 policeman. But this time, this policeman could only speak English. So paul asked the policeman why the Rome police employed（雇佣）so many people who spoke English as policemen.
Paul didn’t b____【小题9】 he was in New York when he was told so. To get him on a plane to Italy, he was s____【小题10】 to the airport in a police car. 查看习题详情和答案>>
短文填空 (共10分，每空1分)
|
come, fall, sit, look, be, walk, jump, sell, hear, drop |
根据短文内容，用方框中所给词的正确形式填空，使短文完整、正确。(每个词只能用一次)(共10分，每小题1分)
Early in the morning, Mr. Black was carrying a big basket of cabbages to the market. She hoped 1.___them to the people from town.
The mountain road was narrow(狭窄的)and the old woman 2.___carefully. Suddenly she 3.___a loud bell. It passed her and very fast down the hill. The old woman had to 4.__to one side of the road so quickly that the basket of cabbages nearly 5.___into the valley.
She saw a young boy 6..___on the bicycle without even 7.___round to see if the old woman was all right.
The old woman shouted, 8.___back.”
“What 9.___it?” the boy asked impolitely, pushing his bike towards the old woman.
“What did I drop?”
“Little boy, you 10.___your manner.” The old woman answered.
查看习题详情和答案>>