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第一部分 听力
第一节 听句子：根据你所听到问句，选择恰当的答语。
1．
A．No, I disagree．
B．Because it's boring．
C．I'm not allowed to stay out late．
2．
A．It might be John's．
B．It's on the table．
C．It's five dollars．
第二节 听对话
(A)从A、B、C三个图画中选出符合对话内容的图画
3．
A．
B．
C．
4．
A．
B．
C．
(B)听第一段对话，回答下题
5．Where did the woman lose her bag?
A．In a car．
B．At the park gate．
C．Under a big tree．
6．What colour is the woman's bag?
A．Green．
B．Blue．
C．Black．
听第二段对话，回答下题
7．Ted is a ________．
A．Frenchman
B．German
C．Canadian
8．English is spoken by more than 400 million people as their ________ language．
A．first
B．second
C．foreign
(C)．根据你所听到的对话，选择正确的答案。
9．Mary is inviting Jack to ________．
A．go camping
B．eat dinner
C．go to a movie
10．There will be a ________ tomorrow．
A．math exam
B．volleyball game
C．class meeting
11．Jack is going to stay at the library for ________．
A．half an hour
B．two hours
C．three hours
12．Jack and Mary will get home ________．
A．on foot
B．by bus
C．by bike
13．Jack has to go home to ________ at six．
A．do the cooking
B．wash clothes
C．practice the piano
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（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>>
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____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____2., he got off the plane.
When nobody was there to meet him, Paul thought maybe the heavy t____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____4. buildings instead of old ones. He also found that many people spoke English but not Italian and that many street signs were w____ 5. in English.
Paul knew very l____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____7..
After twelve hours’ traveling round on a bus, the driver handed him over to a____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____9. he was in New York when he was told so. To get him on a plane to Italy, he was s____10. to the airport in a police car.
查看习题详情和答案>>