Step 1 Review 第一步复习 1.(用单词卡片,呈现1的语音部分.) (1)(老师出示一张椅子的图片.) T: What’s this? S: It’s a chair. (2——青夏教育精英家教网—

Step 1 Review 第一步复习 1.(用单词卡片,呈现1的语音部分.) (1)(老师出示一张椅子的图片.) T: What’s this? S: It’s a chair. (2)(老师出示一张正方形的图片.) T: What’s this? S: It’s a square. (老师用同样的方法呈现出单词: hair, ear, hear, near, poor, sure, tour, mouse, house, flower,并板书.) ／eE／ chair square hair ／uE／ poor sure tour ／IE／ ear hear near ／aJ／ mouse house flower (3)(让学生找出每三个单词的发音规律.) T: Now, Let’s look at these words on the blackboard. Can you find some rules among "chair, square, hair"? Ss: Yes, they have the same phonetics "／e?／". T: Right. "?air" and "?are" usually pronounce "／e?／". (4)(老师用同样的方法让学生找出其他三组单词的发音规律.) T: Find the other rules among "poor, sure, tour","ear, hear, near","mouse, house, flower". (5)(学生四人为一小组,找出其他含有／eE／,／JE／,／IE／,／aJ／的单词,然后向全班汇报,看哪一组找的单词最多.) T: Work in groups. Find out how many words include the phonetics／eE／,／JE／,／IE／,／aJ／. Let’s see which group finds out the most words.(把学生找到的单词都板书在黑板上.) 【查看更多】

题目列表(包括答案和解析)

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．。

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（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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阅读下列短文，根据短文内容选择最佳答案。

　　Think of life as a game in which you are playing with five balls in the air．You name them work, family, health, friends and spirit and you keep all of them in the air．You will soon understand that work is a rubber ball．If you drop it, it will bounce(弹跳)back．

　　But the other four balls, family, health, friends and spirit, are made of glass．If you drop one of these, they will be broken．They will never be the same．You must understand that and try to have balance in your life．How?

　　Don't look down on your worth by comparing yourself with others．It is because we are different and each of us is special．

　　Don't let other people set goals for you．Only you know what is best for yourself．

　　Don't give up when you still have something to give．Nothing is really over until the moment you stop trying．

　　Don't be afraid of difficulties．It is by taking chances that we learn how to be brave．

　　Don't shut love out of your life by saying it's impossible．The quickest way to receive love is to give it; the fastest way to lose love is to hold it too tightly; the best way to keep love is to give it wings．

　　Don't run through life so fast that you forget not only where you’ve been, but also where you are going．

　　Don't be afraid to learn．Knowledge is a treasure you can always carry easily．

　　Don't use time or words carelessly．You can't get them back．Yesterday is history, tomorrow is a mystery, and today is a gift; that's why we call it “the present” Life is not a competition, but a trip, step by step．

(1)

The passage tells us not to ________ because everyone is special．
[　　]
A．	be afraid of difficulties
B．	be afraid to learn
C．	run through life so fast
D．	compare yourself with others to look down on your worth

(2)

The sentence “Nothing is really over until the moment you stop trying．” means that ________．
[　　]
A．	Nothing is possible
B．	If we don't give up, there is always hope
C．	You should learn to give up
D．	Although you try, nothing will change．

(3)

The best way to keep love is to ________．
[　　]
A．	say it's impossible
B．	give it
C．	give it wings
D．	hold it tightly

(4)

According to the passage, which is the best title? ________
[　　]
A．	Nothing is impossible．
B．	Glass balls are easy to be broken．
C．	Things you can't do
D．	Treat your life in a right way．

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听力理解(共24分)

一、听对话，从下面各题所给的A、B、C三幅图片中选择与对话内容相符的图片。每段对话读两遍。(共4分，每小题1分)

1．

A．

B．

C．

2．

A．

B．

C．

3．

A．

B．

C．

4．

A．

B．

C．

二、听对话或独白，根据对话或独白内容，从下列各题所给的A、B、C三个选项中选择最佳选项。每段对话或独白朗读两遍。(共12分，每小题1分)

听第一段对话，回答第5至第6小题。

5．How much is the shirt?

A．13．

B．15.5．

C．30．

6．What colour is the dress?

A．Blue．

B．Black．

C．Brown

听第二段对话，回答第7至第8小题。

7．How is the woman after the long trip?

A．Tired．

B．OK．

C．Sleepy．

8．Where does the dialogue happen?

A．At the airport．

B．At the bus stop．

C．At the train station

现在请听一段对话，回答第9至第10小题。

9．What are the man and the woman talking about?

A．Their weekend．

B．Their hobbies．

C．Their summer holiday．

10．When did the woman go to London?

A．Two years ago

B．Two months ago

C．Two weeks ago

现在请听一段对话，回答第11至第13小题。

生词：poster海报　earthquake地震

11．Why was Lily absent from school that day?

A．Her leg got hurt．

B．She caught a cold．

C．She was on a vacation．

12．They are talking ________?

A．on the Internet．

B．face to face

C．on the telephone

13．What happened in their class that day?

A．They wrote a letter．

B．They collected money．

C．They made a speech competition．

请听一段独白，回答第14至第16小题。

14．The speaker may be a ________．

A．teacher

B．boss

C．guide

15．In the first few months, the new students should ________．

A．look for a job．

B．meet their friends and relatives

C．do their best to get used to the life

16．When the students meet with problems they should ________．

A．think of their parents

B．think everything over carefully

C．make a decision quickly for the future

三、听独白，记录关键信息。独白读两遍。(共8分，每小题2分)

请根据所听到的独白内容和卡片上的提示词语，将所缺的关键信息填写在下面卡片中的相应位置上。

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听对话，选择与对话内容相符的图片，将代表图片的字母填在相应的序号后。每段对话读两遍。(共5分，每小题1分)

1．(　　)　2．(　　)　3．(　　)　4．(　　)　5．(　　)

二．听对话，根据对话内容，判断第6－10小题所给句子的正误。正确的写T，错误的写F。每段对话读两遍。(共5分，每小题1分)

听第一段对话，判断第6－7小题。

6．The boy and the girl like Jay．

7．Jay can write his own songs．

听第二段对话，判断第8－10小题。

8．Jack and Amy are talking about movies．

9．Jack would like to go to Kunming．

10．Amy wants to go with Jack．

三．听对话，根据对话内容，从下列各题所给的A、B、C三个选项中，选择最佳选项。每段对话读两遍。(共5分，每小题1分)

听第一段对话，回答第11－12小题。

11．Where are the two speakers?

A．In a shop．

B．In a hospital．

C．At home．

12．What color does the girl’s father like?

A．Yellow．

B．Blue．

C．White．

听第二段对话，回答第13－15小题。

13．What kind of tour does the woman want to take?

A．A half-day tour．

B．A full-day tour．

C．A day-and-evening tour．

14．What will happen to the children while their parents are away?

A．The hotel will look after them．

B．The man will take them to the theatre．

C．They will have the dinner entertainment in the hotel．

15．How much will the woman pay for her family?

A．70 pounds．

B．140 pounds．

C．200 pounds．

四．听短文，根据短文内容，完成下面的表格。短文读三遍。(共10分，每小题2分)

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