(教师将学生分成两组.每组各读一段.一组学生读的时候.另一组学生仔细听.并找出对方读得不准确的地方.) T: Line One and Line Two are Group A. Line Thr——青夏教育精英家教网—

(教师将学生分成两组.每组各读一段.一组学生读的时候.另一组学生仔细听.并找出对方读得不准确的地方.) T: Line One and Line Two are Group A. Line Three and Line Four are Group B. Group A, go! - Group B, go! - (教师根据学生的活动情况给予适当的评价.若时间允许.可抽查几名学生进行个别朗读.) 【查看更多】

题目列表(包括答案和解析)

（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Ca²⁺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：                                  。

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听力测试(共19小题，计19分)

(一)录音中有四组句子，每组句子读一遍，然后从每组的A、B、C三个句子中选出一个与图画内容相符合的选项。

(二)录音中有五个句子，每个句子读两遍，根据你听到的内容，选择最佳答语。

5．A．He is Number 2 in Row 6．

B．He is in Class2．

C．Mine is 5930．

D．It's 1027．

6．A．At six o'clock．

B．Good idea．

C．By bike．

D．At the school gate．

7．A．It is white．

B．It is wonderful．

C．It doesn't work

D．It is cheap．

8．A．Don't worry．

B．It doesn't matter

C．It's my pleasure

D．Thank you．

9．A．She is lucky．

B．OK!

C．I'm glad to hear that．

D．What a pity!

(三)录音中有五组对话和五个问题，每组对话读两遍，问题只读一遍，根据你听到的对话内容和相关问题，选择最佳答案。

10．A．Hot．

B．Rainy．

C．Cold

D．Sunny

11．A．On foot

B．By bike．

C．By bus

D．By train．

12．A．In a supermarket．

B．In a bookshop．

C．In a post office

D．In a library．

13．A．At 6∶00．

B．At 6∶15．

C．At 6∶30

D．At 6∶45

14．A．Because she is sleeping．

B．Because she is tired

C．Because she is not in．

D．Because she is working．

(四)录音中有一篇短文，短文读三遍，根据你听到的短文内容选择最佳答案。你将有15秒钟的时间阅读这5个小题。

15．Where are the visitors now?

A．In the History Museum．

B．In the Art Museum．

C．In the Science Museum．

D．In the Musecum of Natural History．

16．How long will they stay on the firsl floor?

A．A quarter．

B．Half an hour

C．Forty-five minutes．

D．An hour．

17．What can they learn on the second floor?

A．Trees

B．Computers．

C．Rockets

D．Paintings．

18．What can they learn if they come to the third floor?

A．Space

B．Rdios

C．Plants．

D．Phones．

19．On which floor can they learn the history of the car?

A．On the first floor．

B．On the second floor．

C．On the thind floor．

D．On the fourth floor．

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听力测试

听录音，从A、B、C三个选项中选择与画面一致的选项．录音内容读一遍．(每小题1分)

1．

2．

3．

4．

5．

(二)听录音，选择适当的答语．录音内容读两遍．(每小题1分)

6．A．My teacher praised me．

B．I lost the game．

C．I've been to Japan．

7．A．That's a good idea．

B．Yes, please．

C．I don't think so．

8．A．I agree with you．

B．I'll try it．

C．Thank you very much．

9．A．In two weeks．

B．At the Central Park．

C．For about two years．

10．A．Really?

B．Yes, I did．

C．So I did．

(三)对话理解(每小题1分)

你将听到两段对话，在每段对话后有几个小题．请在每小题所给的A、B、C三个选项中选出最佳选项．每段对话读两遍．

听下面一段对话，回答第11和12小题．

11．What does Ted want to be when he grows up?

A．A computer player．

B．A computer shop owner．

C．A computer programmer．

12．Where will Ted work?

A．In his father's company．

B．In his uncle's company．

C．In his own company．

听下面一段对话，回答第13至15小题．

13．What did Mary want to give back to Fred?

A．His keys．

B．His glasses．

C．His jackets．

14．What did Fred do with his group?

A．They did experiments．

B．They cleaned the street．

C．They did some shopping．

15．How many times has Yantai been one of the best civilized cities of China?

A．Once．

B．Twice．

C．Three times．

(四)听短文，根据短文内容完成下列表格．短文读两遍．(每空限填一词，每小题1分)

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一、听录音：选择你所听到的字母或单词．每小题读一次．(本大题共5小题，每小题1分，共5分)

1．A．B

B．V

C．G

2．A．F

B．M

C．L

3．A．black

B．thank

C．bag

4．A．orange

B．dinner

C．ice cream

5．A．eight chickens

B．seven pears

C．seven carrots

二、你将听到5个句子，请选出与句子内容相符的图画选项．每小题读一次．(每小题1分，共5分)

6．

7．

8．

9．

10．

三、听问题，选出正确的答语．每小题读一次．(本大题共5小题，每小题1分，共5分)

11．A．Yes, this is．

B．Yes, I am．

C．No it isn’t．

12．A．Yes, it is．

B．No, I don’t．

C．Thank you．

13．A．Thank you．

B．OK．

C．You’re welcome．

14．A．Nice to meet you．

B．Fine, thank you．

C．How do you do?

15．A．No, it isn’t

B．It’s a watch．

C．Thank you．

四、听对话，回答问题．每小题读两次．(本大题共5小题，每小题1分，共5分)

听第一段对话，回答16-17小题．

16．What’s the boy’s family name?

A．Jim．

B．Kate．

C．Green

17．How many people are mentioned(提到)in the dialogue(对话)？

A．Three．

B．Four．

C．Five．

听第二段对话，回答18-20小题．

18．What’s the first name of the woman?

A．Henry

B．Helen

C．Brown

19．What’s the woman’s telephone number?

A．2809006．

B．2889006．

C．2880906．

20．Where do you think they’re talking(交谈)?

A．At the lost and found

B．In the shop

C．At home．

五、听对话，填入正确的词，使对话完整．每小题读两次．(本大题共5小题，每小题1分，共5分)

A：Hi, Jim!Do you 　　21　　 soccer?

B：Yes, I like soccer and basketball．

A：Do you like tennis too?

B：Yes, I do．My 　　22　　 and I play tennis．

A：Do you have a tennis racket?

B：Yes．But 　　23　　 is my tennis racket?

A：Oh, do you have a basketball?

B：Yes, I 　　24　　．

A：OK, Let’s play basketball．

B：That 　　25　　 good!

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你将听到一篇短文和五个问题，短文读两遍，每个问题仅读一遍。请根据短文内容，在每小题所给的
A、B、C三个选项中选出最佳选项。

1. Where will they go?

A. A town.
B. A city.
C. A school.

2. How will they to there?

A. By train.
B. By bus.
C. On toot.

3. How long will it take them to get there?

A. Over 3 hours.
B. Over 2 hours.
C. Over 5 hours.

4. What will they take for lunch?

A. Rice.
B. Bread.
C. Sandwiches.

5. What can they do after lunch?

A. Go swimming.
B. Go shopping.
C. Go boating.

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