One way that scientists learn about man is by studying animals．In this lab, the scientists are studying the relationship between diet and health．

　　They are studying the relationship between the amount of food the mice eat and their health．The mice are in three groups．All three groups are receiving the same healthy food．The first group is eating one cup of food each day, the second group is eating two cups, and the third group is eating three cups．

　　After three years, the healthiest group is the one that is only eating one cup of food each day．The mice in this group are a little thinner。But they are more active．Most of the day, they are running, playing with one another．Also, they are living longer．Mice usually live for two years．Most of the mice in this group are still alive after three years．

　　The second group of mice is healthy, too．They are active, but not as active as the thinner mice．They are only living about two years．

　　The last group of mice is receiving more food than the other two groups．Most of the day, these mice are eating or sleeping．They are not very active．These mice are living longer than the scientists thought－about a year and a half．But they are not healthy．They are sick more often than the other two groups．

(1)

The experiment lasted for at least ________ years．

[　　]

A．

one and a half

B．

two

C．

two and a half

D．

three

(2)

The best title for the passage is ________．

[　　]

A．

Man and health

B．

Diet and animals

C．

Diet and health

D．

Animals and human beings

(3)

The result of the experiment mainly shows that ________．

[　　]

A．

eating less may bring longer life

B．

the mice eat more than the scientists thought

C．

the mice live longer than the scientists thought

D．

the more exercise you take．the healthier you will be

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：初中英語(yǔ) 來(lái)源： 題型：054

完形填空：（15分）

通讀下面短文，掌握其大意，然后從短文后所給的A、B、C、D四個(gè)選項(xiàng)中選一最佳答案.

　The word Sandwich（三明治）is　　 　1　 English word. Sandwich　　 　2　 an Englishman. He　　 　3 　about two hundred years　　 　4　 . Sandwich had　　 　5 　of money. He was very　　 　6 　. But he liked　　 　7　 play cards for money. He often played　　 　8　 day and all night. One time, he played twenty　　 - four hours 　9　 stopping. He did not　　 　10 　the card table to eat. He asked his servant to　　 　11 　him some meat and　　 　12　 bread. He did not want to stop playing while he ate. He put the meat　　 　13 　two pieces　　 　14　bread. In this way he could go on　　 　15　cards.

From the name of this men, Sandwich, we have the word “Sandwich” today.

　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　　　 　　 　　 　　

(1)  A． 　　 the

B．　　 　　 a

C．　　 　　 an

D．　　 　　 /

[　　]

(2)  A． 　　 is

B．　　 　　 are

C．　　 　　 was

D．　　 　　 were

[　　]

(3)  A． 　　 was

B．　　 　　 lived

C．　　 　　 loved

D．　　 　　 life

[　　]

(4)  A． 　　 ago

B．　　 　　 before 

C．　　 　　 after

D．　　 　　 since

[　　]

(5)  A． 　　 much

B．　　 　　 a lot of

C．　　 　　 lot

D．　　 　　 lots

[　　]

(6)  A． 　　 rich

B．　　 　　 poor

C．　　 　　 kind

D．　　 　　 bad

[　　]

(7)  A． 　　 for

B．　　 　　 with

C．　　 　　 by

D．　　 　　 to

[　　]

(8)  A． 　　 both

B．　　 　　 all

C．　　 　　 every 

D．　　 　　 only

[　　]

(9)  A． 　　 with 

B．　　 　　 don't 

C．　　 　　 without 

D．　　 　　 not

[　　]

(10)  A． 　　 live

B．　　 　　 leave

C．　　 　　 go 

D．　　 　　 come

[　　]

(11)  A． 　　 take

B．　　 　　 get

C．　　 　　 fetch 

D．　　 　　 bring

[　　]

(12)  A． 　　 any

B．　　 　　 some

C．　　 　　 a piece

D．　　 　　 a

[　　]

(13)  A． 　　 among

B．　　 　　 in

C．　　 　　 between 

D． 　　 on

[　　]

(14)  A． 　　 for

B． 　　 of

C． 　　 on

D． 　　 with

[　　]

(15)  A． 　　 playing

B． 　　 to play

C． 　　 played 

D． 　　 play

[　　]

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：英語(yǔ)教研室 題型：054

About 70,000,000 Americans are trying to lose weight (減肥). That is almost one out of every three people in the United States. Some people eat 1 food and they hardly have any fat or sweets. Others do running, exercise with machines, take medicines, or even have operations. 2 you can see losing weight is 3 work, and it will also cost a lot of money. But 4 do so many people in the United States want to lose weight?

    Many people in the United States worry about their looks. For many people, looking nice also means to be 5. Other people worry about their health as many doctors 6 overweight is not good.

    Most people want to find a faster and 7 way to take off fat, and books of this kind are very popular.

    These books tell people how to lose weight. Each year a lot of new books like these are 8. Each one says it can easily help people take fat away.

    Losing weight can be 9. Some overweight people go to health centers, like La Costa in California. Men and women 10 several hundred dollars a day at these health centers. People live there for one week or two, 11 exercise, eating different foods. Meals there may be just a little. All this works for losing weight.

    12 4 days on the programme, one woman called Mrs. Warren lost 5 pounds (2.27kg). At $400 a day, she spent $320 to lose each pound. But she said she was still 13 to do so.

    Health centers, books, medicines, operations, running and exercise machines all 14 a lot of money. So in the United States, losing weight may mean losing 15, too.

    1 .A. less　　　　　　   B. more　　　　　　　　 C. nice　　　　　　　　  D. fast

    2. A. For　　　　　　   B. So　　　　　　　　    C. Or　　　　　　　　    D. And

    3. A. good　　　　　　 B. useful　　　　　　    C. hard　　　　　　　　  D. easy

    4. A. why　　　　　　　　　　 B. what　　　　　　　　 C. how　　　　　　　　  D. when

    5. A. high　　　　　　      B. short　　　　　　　　 C. thin　　　　　　　　   D. fat

    6. A. talk　　　　　　   B. say　　　　　　　　   C. speak　　　　　　    D. tell

    7. A. dearer　　　　    B. harder　　　　　　   C. shorter　　　　　　　　　　 D. easier

    8. A. taken　　　　　　 B. given　　　　　　　　 C. written　　　　　　　　　　 D. copied

    9. A. cheap　　　　    B. expensive　　　　  C. easy　　　　　　　　  D. safe

    10. A. pay　　　　　　  B. cost　　　　　　　　  C. take　　　　　　　　  D. have

    11. A. making　　　　 B. taking　　　　　　    C. playing　　　　　　  D. using

    12. A. Before　　　　 B. In　　　　　　　　　　 C. After　　　　　　　　 D. At

    13. A. sorry　　　　   B. angry　　　　　　    C. sad　　　　　　   &nbsVp;   D. glad

    14. A. need　　　　    B. have　　　　　　　　  C. use　　　　　　　　   D. get

    15. A. health　　　　  B. time　　　　　　　　  C. food　　　　　　　　 D. money

 

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源： 題型：閱讀理解

“I’m really thankful to our government, for it provides us with such a good training program. The training greatly helps us live well. I will certainly study hard and learn the skills. Then I can 41] my family difficulties and do good to other people.” a learner on the job training program said, feeling 42:

The learner’s grandfather is nearly 80 years old, and his mother is 43] in bed. So his father, who is a father, is the main 44] of the family. The family is poor. The learner graduated from high school and did not 45] the college entrance exam. The job training program helps him learn the skills that he’ll 46] in the workplace.

The story reminds me of another 47: It goes like this: Once upon a time, there was a man who liked fishing very much, and was 48] to catch lots of fish every day. The man was a kind-hearted person, so he always 49] his fish with his neighbors who did not know how to fish. One day, he thought that it would be 50] if he taught them how to fish. So he 51] his neighbors tighter and showed how to fish. Everybody was very happy that they could 52] the fish they themselves caught.

At present, there are still a lot of poor people throughout the world. But it’s not good if we give only 53] to them. 54], we should give them a chance to learn new skills. Therefore, a technical training is very important to people in need, and they will learn the ability to 55] money. People can learn a lot of useful things in the training program and what learn can help them on the way to find jobs.

41:A. solve 　　　　　　　　　　　　 B. change 　　　　　　　　　 C. study　　　　　　　 　　 D. find

42:A. surprised B. excited C. relaxed D. interested

43:A. ill 　　　　　　　　　　　 B. excited 　　　　　　　　　 C. silent 　　　　　　　　　　 D. dangerous

44:A. problem 　　　　　　　　　 B. example 　　　　　　　　 C. relatives 　　　　　　　　 D. support

45:A. pass 　　　　　　　　　　　　 B. copy 　　　　　　　　　　 C. know 　　　　　　　　　　　　　 D. mind

46:A. repeat 　　　　　　　 B. forget　　　　　　　　　　　 C. need 　　　　　　　　　　　 D. test

47:A. story 　　　　　　　　　　　　 B. learner 　　　　　　　　　 C. family 　　　　　　　　　 D. program

48:A. afraid 　　　　　　　　　　　 B. lucky 　　　　　　　　　　 C. sorry 　　　　　　　　　　 D. able

49:A. shared 　　　　　　　 B. cooked 　　　　　　　　　 C. exchanged 　　　　　　　　　　 D. weighed

50:A. easy 　　　　　　　　　　　　 B. great 　　　　　　　　　　 C. useless 　　　　　　　　　 D. crazy

51:A. drove 　　　　　　　　　　　 B. stopped 　　　　　　　　 C. called 　　　　　　　　　　 D. searched

52:A. feed 　　　　　　　　　　　　 B. save 　　　　　　　　　　　 C. touch 　　　　　　　　　　　　　 D.eat

53:A. time 　　　　　　　　　　　　 B. fish 　　　　　　　　　　　 C. food 　　　　　　　　　　　 D. clothing

54:A. Next 　　　　　　　　　　　　 B. Instead 　　　　　　　　　 C. Luckily 　　　　　　　　　 D. Especially

55:A. pay 　　　　　　　　　　　　　 B. give 　　　　　　　　　　　 C. use 　　　　　　　　　　　 D. make

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：同步題 題型：完形填空

完型填空。
     I found out one time that doing a favour for someone could get you into a lot of trouble. I was in the
eighth grade at the time,    1   we were having a final test.    2   the test, the girl sitting next to me    3  
 something, but I didn't    4  .
     So I leaned over her way and found out that she was trying to ask me if I had an extra    5  . She
showed me that hers was out of ink and would not write. I    6   to have an extra one, so I took it out of
my pocket and put it on her desk. 　　
     Later, after the test papers had been    7  , the teacher asked me to stay in the room when all the other
students were    8  . As soon as we were alone, she began to talk to me about what it meant to    9    up;
she mentioned how important it was to   10   on your own two feet and be responsible (有責(zé)任感的) for
your own acts. For a long time, she talked about   11  and emphasized (強(qiáng)調(diào)) the fact that when people do
something dishonest (不誠(chéng)實(shí)), they are really   12  themselves. She made me promise that I would think
seriously about all the things she had said, and then she told me I   13  leave. I walked out of the room   14 
 why she had chosen to talk to me about all those things. 　　
     Later on, I found out that she thought I had   15   on the test. When she saw me lean over to talk to the
girl next to me, it looked as though I was   16  something from the girl's test paper. I tried to explain about
the pen, but all she could say was it seemed really   17  to her that I hadn't mentioned anything about the pen
the day she talked to me right after the test.   18  I tried to explain that I was just doing the girl a   19  by
letting her use my pen, I am sure she   20  to believe that I had cheated (作弊) on the test.
(     )1. A. when　　　　　    　　
(     )2. A. During　　　  　　
(     )3. A. showed　　 　 　　
(     )4. A. listen　　 　 　　
(     )5. A. pen　　 　　　　　
(     )6. A. asked　　　　 　　
(     )7. A. marked　 　　 　　
(     )8. A. left　　　　　　　
(     )9. A. stand　　 　　　　
(     )10. A. depend　　 　　　
(     )11. A. tests　　　　　　
(     )12. A. enjoying　　 　　
(     )13. A. should　　 　　　
(     )14. A. wondering　　　　
(     )15. A. lied　　　 　　　
(     )16. A. copying　　　　　
(     )17. A. strange　　　　　
(     )18. A. Because　　  　　
(     )19. A. trouble　　　
(     )20. A. insisted　　　   		B. while　　　　 
B. After　　　　　
B. asked　　　　　 
B. understand　 
B. pencil　　　　
B. happened　 　　
B. finished　　 　 
B. disappeared　
B. grow　　　 　　
B. defend　　 　　 
B. students　　　      
B. cheating　　　
B. could　　 　　
B. realizing　　 
B. helped　　 　　
B. borrowing　  　
B. dishonest　　
B. If　　　　 　　 
B. good　　　 　
B. tried　　　　　		 C. then　 　　　　
C. Before　　 　　
C. whispered　 　
C. answer　　　  
C. paper　　　　　
C. regretted　 　
C. given out　 　
C. stopped　　　　
C. bring　　　　　
C. stand　　 　　
C. friendship　 　   
C. teaching　　 　
C. would　　　　 
C. laughing　　 　
C. stolen　　　　
C. asking　　　 　
C. sorry　　　 　
C. Until　　　 　
C. harm　　　　　
C. continued　　　		 D. and         
D. For         
D. lost        
D. find        
D. ink bottle  
D. wished      
D. turned in   
D. dismissed   
D. rise        
D. walk        
D. honesty                                  
D. helping     
D. must        
D. believing   
D. cheated     
D. searching   
D. wrong       
D. Although    
D. favour      
D. refused     

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源： 題型：

As everyone knows, there are many 　31　 of transportation in the world, like bicycles, buses, ships, trains and 　32　 .
　 If you are in big 33　like Shanghai or Beijing, maybe you get to school 34　 subway; or you have to 　35　 to school because you live in a mountain village. Here I am just trying to say something about　36　 .
　 Ten years　37　, bicycles were very　38　in most villages.　39　 family had one or two of bicycles. Children got to school by bicycle; women　40　bicycles to go shopping. Then motorcycles (摩托車)　 41　 to become popular. People no longer rode bicycles because motorcycles ran much　 42　 .But now, in some countries bicycles are highly suggested　 43　 the main means of transportation. They think buses, cars and motorcycles pollute(污染) the air but bicycles　 44　 . So, to live a low-carbon life, riding a bike is a good　 45　 .
31. A. kind　　　　　　　　　 B. kinds　　　　　　　　　　　 C. mean　　　　　　　　　　　 D. way
32. A. other　　　　　　　　　　　　 B. others　　　　　　　　　　 C. the other　　　　　　　　 D. another
33. A. cities　　　 　　　　　 B. countries　　　　　　　　 C. villages　　　　　　　　　　 D. countryside
34. A. on　　　　　 　　　　 B. by　　　　　　　　　　　　　 C. in　　　 　　　　　　　　　 D. of
35. A. on foot　　　　 　　 B. walk　　　 　　　　　　　　 C. walks　　　 　　　　　　　 D. runs
36. A. bicycles　　　　　　 B. motorcycles　　　　　　 C. buses　　　　 　　　　　 D. cars
37. A. later　　　　　　　　　 B. before　　　　　　　　　　 C. ago　　　　　　　　　　　　 D. after
38. A. cheap B. important C. expensive D. popular
39. A. All　　　 　　　　　　 B. Both　　　 　　　　　　　　 C. Every 　　　 　　　　　　 D. Most
40. A. rode　　　 　　　　　 B. ride　　　　　　　　　　　　 C. rided　　　　　　　　　　　 D. rides
41. A. begin　　　　　　　　　　　　 B. began　　　　 　　　　　 C. begun　　　　 　　　　　 D. start
42. A.fast　　　　　 　　　　 B. faster　　　 　　　　　　　 C. slow　　　　　　　　　　　 D. slower
43. A. for　　　 　　　　　　 B. in　 　　　　 　　　　　　　　　　 C. at　　　　　　 　　　　　　　　　　 D. as
44. A. not　　　　　 　　　　 B. don’t　　　　 　　　　　　 C. doesn’t 　　　　　　　　　 D. didn’t
45. A. way　　　 　　　　　 B. road　　　　　　　　　　　　　　　 C. route　　　　 　　　　　　　　　 D. kind

查看答案和解析>>

同步練習(xí)冊(cè)答案