C.引导一段时间用for. 查看更多

 

题目列表(包括答案和解析)

Just a Quick Nap 只要打个盹儿

Do you feel a little sleepy after lunch? Well, that’s normal. Your body naturally slows down then. What should you do about it? Don’t reach for a coffee! Instead, take a nap.

It’s good to have a daily nap. First of all , you are more efficient(有效的) after napping . You remember things better and make fewer mistakes. Also, you can learn things more easily after taking a nap. A nap may increase your self-confidence(自信) and make you more active . It may even cheer you up. But, there are some simple rules you should follow about taking a nap. First, take a nap in the middle of day, about eight hours after you wake up. Next, a 20-minute nap is best. If you sleep longer, you may fall into a deep sleep. After waking from a deep sleep, you will feel worse. Also, you should set an alarm clock. That way, you can fully relax during your nap. You won’t have to keep looking at the clock so you don’t oversleep.

Now,the next time you feel sleepy after lunch , don’t get stressed . Put your head down, close your eyes, and catch forty winks.

1.It is       to get sleepy for you at noon.

A. normal          B. strange         C. amazing

2.After taking a nap, you may feel more        .

A. stressed         B. confident        C. sleepy

3.The proper period(一段时间)of time for taking a nap is      .

A. as long as you like       B. eight hours     C. about twenty minutes

4.What can help you have a fully relaxing nap according to the passage?

A. A cup of coffee.         B. A quick meal.   C. An alarm clock.

5.What is the text mainly about?

A. Why and how to take a nap.

B. Rules to increase your self –confidence.

C. How to make your body slow down.

 

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Just a Quick Nap 只要打个盹儿
Do you feel a little sleepy after lunch? Well, that’s normal. Your body naturally slows down then. What should you do about it? Don’t reach for a coffee! Instead, take a nap.
It’s good to have a daily nap. First of all , you are more efficient(有效的) after napping . You remember things better and make fewer mistakes. Also, you can learn things more easily after taking a nap. A nap may increase your self-confidence(自信) and make you more active . It may even cheer you up. But, there are some simple rules you should follow about taking a nap. First, take a nap in the middle of day, about eight hours after you wake up. Next, a 20-minute nap is best. If you sleep longer, you may fall into a deep sleep. After waking from a deep sleep, you will feel worse. Also, you should set an alarm clock. That way, you can fully relax during your nap. You won’t have to keep looking at the clock so you don’t oversleep.
Now,the next time you feel sleepy after lunch , don’t get stressed . Put your head down, close your eyes, and catch forty winks.
【小题1】It is       to get sleepy for you at noon.
A. normal          B. strange         C. amazing
【小题2】After taking a nap, you may feel more        .
A. stressed         B. confident        C. sleepy
【小题3】The proper period(一段时间)of time for taking a nap is      .
A. as long as you like       B. eight hours     C. about twenty minutes
【小题4】What can help you have a fully relaxing nap according to the passage?
A. A cup of coffee.         B. A quick meal.   C. An alarm clock.
【小题5】What is the text mainly about?
A. Why and how to take a nap.
B. Rules to increase your self –confidence.
C. How to make your body slow down.

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如图甲所示,某同学将一小块钠放在石棉网上加热,观察到生成的产物除了淡黄色固体外还有一些黑色固体物质,当时他想这种黑色物质应该是钠表面吸附的煤油不完全燃烧产生的碳单质,但在学习了镁与C02的反应后,该同学想:就金属活动性而言,Na比Mg还强,该黑色物质是否是Na与C02反应生成的碳单质。为了验证自己的想法,该同学利用装置乙进行实验。

实验步骤如下:①切取一小块金属钠,用滤纸完全吸干煤油,再除去表面的氧化层,放进干燥的E中;
②打开分液漏斗的活塞,使B中的反应进行一段时间后,再点燃E处的酒精灯。
实验现象如下:钠在充满C02气体的玻璃管中剧烈燃烧起来,产生大量的白烟;玻璃管中有黑色物质生成;待玻璃管冷却后,管壁上附着一层白色物质。
请回答下列问题:
(1)C中盛放的试剂是   ,作用是            。D中盛放的试剂是   ,作用是            
(2)B中的反应进行一段时间后,再点燃E处的酒精灯的目的是                  
(3)该同学将白色物质和黑色物质分别溶于水,发现黑色物质不溶于水,白色物质能溶于水。由此,该同学得出结论,该黑色物质是Na与C02反应生成的碳单质,则其他生成物还应该有       
(4)请设计一实验方案验证玻璃管内Na与C02反应生成的白色物质的成分,并写出实验步骤、现象和结论       
(5)若先点燃E处的酒精灯,再打开分液漏斗的活塞,写出此时玻璃管E中可能发生的反应的化学方程式                                     

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如图,A池用石墨电极电解NaOH溶液,B池精炼粗铜,一段时间后停止通电,A池中d极产生具有氧化性的气体在标准状况下为2.24L。下列说法正确的是(   )
A.A池为电解池,B池为原电池
B.d、e两极都发生氧化反应
C.e极应为粗铜板材料
D.B池中e极质量增加12.8g

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Ⅰ.听力对话理解(共10分,每小题1分)

A)听小对话,每段对话你将听到前面的1-3句,从每小题的三个选项中选出能完成对话最后1句的最佳答语,每段对话听两遍。

1.A.How do you do?

B.I'm fine.Thank you.

C.Nice to meet you, too.

2.A.Math.

B.Class 2.

C.I'm 15.

3.A.Good idea.They're very delicious.

B.Hey, welcome to our restaurant.

C.All right, just a minute, please.

4.A.Sorry, I have to go to doctor.

B.Thank you all the same.

C.I'd like to go to the space.

5.A.You'll have to try harder at it next term.

B.Math is also a very difficult subject.

C.You'd better be good to your classmates.

B)听小对话,根据你听到的内容从每小题的三个选项中选出一个正确答案,每段对话听两遍。

6.What does Mr.Black do?

A.He is a water.

B.He is a shop assistant.

C.He is a teacher.

7.Where are they talking?

A.In a school.

B.In a hotel.

C.In a shop.

8.Where does the woman come from?

A.Canada.

B.England.

C.France.

9.What does the man want to be now?

A.A scientist.

B.A teacher.

C.A doctor.

10.What does Miss Black ask the boy to do?

A.To read more books.

B.Not to read in class.

C.To read good books.

Ⅱ.听力篇章理解(共10分,每小题1分)

听下面A,B两篇的两段对话和C篇的一段独白,并从每小题的三个选项中选出一个正确答案,对话或独白听两遍。

(A)11.What are they going to do in the evening?

A.To eat out together.

B.To have a party.

C.To cook at home.

12.Why don't they want to have Sichuan food?

A.It's expensive.

B.It's too hot.

C.It's not delicious.

13.What kind of food are they going to have?

A.Japanese food.

B.Italian food.

C.Indian food.

(B)14.Why didn't Joyce go to school?

A.It was raining hard.

B.She hurt her leg.

C.Her parents were ill.

15.How did she go home yesterday?

A.By bus.

B.By car.

C.By bike.

16.Who might Mr.Smith be?

A.Her teacher.

B.Her father.

C.Her doctor.

(C)17.What was the main reason for people to have dogs in the past?

A.To help them work.

B.To make money.

C.To keep them safe.

18.What do people think of dogs now?

A.They regard them as their friends.

B.Dogs are their children.

C.Dogs help them with everything.

19.What is a dog for a child?

A.A smart teacher.

B.A playing partner.

C.A helpful brother.

20.Why do old people keep dogs?

A.They regard dogs as their children.

B.Dogs can play with them.

C.Dogs make them feel safer.

Ⅲ.听力完成任务(共5分,每小题1分)

听短文,根据短文内容用1-3个词简略回答各个问题。

1.On what day did they go on the trip?

2.How many buses were there?

3.What did the teachers tell them about?

4.How long did it take them to get to the mountain?

5.What did they think of the trip?

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