B If the salinity of ocean waters is examined, it is found to vary only slightly from place to place. Nevertheless, some of these small changes are important. There are three basic processes of changes that cause a change in oceanic salinity. One of these is the subtraction of water from the ocean by means of evaporation-change from liquid water to water vapor . In this manner, the salinity is increased, since the salts stay behind. If this is carried to the extreme, of course, white crystalsof salt would be left behind; this, by the way, is how much of the table salt we can get and use. The opposite of evaporation is precipitation, such as rain, by which water is added to the ocean. Here the ocean is being diluted so that the salinity is decreased. This may occur in areas of high rainfall or in coastal areas where rivers flow into the ocean. Thus salinity may be increased by the subtraction of water by evaporation or decreased by the addition of fresh water by precipitation or runoff. Normally, in tropical regions where the sun is very strong the ocean salinity is somewhat higher that it is in other parts of the world where there is not as much evaporation. Similarly, in coastal regions where rivers dilute the sea, salinity is somewhat lower than in other oceanic areas. A third process by which salinity may vary is connected with the formation and meltingof sea ice. When seawater is frozen, some materials are left behind. In this manner, seawater directly beneath freshly formed sea ice has a higher salinity than it did before the ice appeared. Of course, when this ice melts, it will tend to decrease salinity of the surrounding water. In the Weddell Sea, off Antarctica, the densest water in the oceans is formed as a result of this freezing process, which increases the salinity of cold water. This heavy water sinks and is found in the deeper part of the oceans of the world. 6. According to the passage, the ocean generally has more salt in . A. coastal areas B. tropical areas C. rainy areas D. cold areas 7. All of the following are processes that decrease salinity except . A. evaporation B. precipitation C. runoff D. melting 8. About the salinity of a body of water, we can infer from the passage that . A. ocean salinity has little effect on sea life B. the temperature is the most important factor C. how quickly the water moves is directly related to the amount of salt D. various factors combined to cause variation in the salt content of water 9. Which of the following is a result of the formation of ocean ice? A. The salt in the water decreases. B. The water becomes less dense. C. The water beneath forms a deeper layer in the ocean. D. The surrounding water sinks to the bottom of the ocean. 10. What does the word “salinity mean in the passage? It means “ . A. the composition of salt waters B. the bodies of water of the world C. the various changes in water D. the degree of being salt 查看更多

 

题目列表(包括答案和解析)

— Has the homework been finished?

— Our teacher asked you .

   A. whether had the work been finished

   B. if the work had been finished

   C. the homework has been finished

   D. the work had been finished

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阅读下列短文, 从所给的四个选项中, 选出最佳答案。  

    Lillian Carter, the former President's mother, once set up an   interview with a reporter without benefit from the press office.

  

    "Your son, " the reporter said, "has been travelling the country,   telling people not to vote (投票) for him if he ever lies to them.   Can you, knowing a son as only a mother can, honestly say he's never   lied?"

    "Well, perhaps a little white lie now and then, " Jimmy Carter's   mother replied.

  

    "And what," asked the reporter, "is the difference between a white   lie and any other? Define (下定义) white lie for me."

  

    "I'm not sure I can define it," she said sweetly, "but I can give   you an example. Do you remember when you came in a few minutes ago and   I told you how good you looked and how glad I was to see you ?"  

(1)   We know the interview must have taken place __________.

[    ]

A. shortly after the general election     

B. when Carter was elected President of the U.S.     

C. before the general election      

D. when Carter had just told a lie 

(2) Jimmy Carter traveled the country in order to ________.

[    ]

A. know the country better   

B. find out what the public was thinking   

C. win over votes for the coming general election    

D. tell people that he never lied 

(3)  The reporter believed ____________.

[   ] 

A. the mother surely knew about her son's lies   

B. if the mother was dishonest, her son would tell lies   

C. no one but the mother knew the son   

D. the mother knew her son best 

(4) From the story we can see that Carter's mother was __________.

[    ]

A. stupid  B. honest  C. clever  D. dishonest 

(5)  Perhaps you can define a white lie now. It's a lie __________.

[    ]

A. which is worthy of attention   

B. told for particular reasons, such as for politeness   

C. that no one will ever believe   

D. which means little harm and therefore is unimportant.

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If you are in charge of a project,the key to success is getting everyone to want to help you.As a director,I point,I suggest,I gently push the actors in the direction I want them to go.In the 1986 movie,“Nothing in Common”,Jackie Gleason’s character,Max Basner,gets fired from his job as a clothing salesman.The scene,shot on a boat,shows Max’s despair about being out of work.I was looking for some gestrue that would allow Max to show his feelings.

Jackie had far more experience at everything than I did,and at first I was frightened.What could I possibly tell “The Great One” about acting?Out of fear I decided to direct by suggestion,and I sat down with Gleason to talk about the scene.“So Max is sad,right?” I said.

Gleason nodded.

“And he’s probably still carrying his pens with his name on them—the ones he used to hand out to his customers,right?”

Gleason nodded.

“So what would you want to do with the pens after you were fired?”

He was silent for a moment.“Why don’t I throw them overboard?”

I stood up and turned towards the crew.“Hey,everybody,Jackie has a wonderful idea.Let’s shoot it.”

After filming the scene,Gleason called me over and said with a smile.“Garry,what kind of wonderful idea am I going to have tomorrow?”

You and your team can discover the answers to problems together.When there are no prizes or gold stars for those who get the solution first,you’ll all benefit when everything turns out right.

1.The author tells us that to succeed in the project you are in charge of you should ________.

A.make everyone work for you       B.get everyone willing to help you

C.let people know you have the final say   D.keep sending out orders to them

2.It can be inferred that ________.

A.Jackie Gleason is the director of the film “Nothing in Common

B.Jackie Gleason is very angry when he is fired from his job

C.Max,a character in a film,is in very low spirits when he loses his job

D.Jackie Gleason is the writer of the film“Nothing in Common

3.“The Great One” in Paragraph 2 refers to ________.

A.Gleason           B.the director himself

C.Max             D.Max’s boss

4.Why did Gleason call the director over and smile at him?

Because Gleason ________.

A.thought his wonderful idea was accepted by the director

B.succeeded in hitting upon a wonderful idea

C.was confident about his work the next day

D.appreciated the director’s skill

5.The most suitable title for the passage is “________”.

A.Directing a Film        B.The Key to Success

C.A Wonderful Experience     D.Working with Film

 

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I began working in journalism(新闻工作)when I was eight. It was my mother’s idea. She wanted me to “make something” of myself, and decided I had better start young if I was to have any chance of keeping up with the competition.

With my load of magazines I headed toward Belleville Avenue. The crowds were there. There were two gas stations on the corner of Belleville and Union. For several hours I made myself highly visible, making sure everyone could see me and the heavy black letters on the bag that said THE SATURDAY EVENING POST. When it was suppertime, I walked back home.

“ How many did you sell, my boy?” my mother asked.

“ None.”

“ Where did you go?”

“ The corner of Belleville and Union Avenues.”

“ What did you do?”

“ Stood on the corner waiting for somebody to buy a Saturday Evening Post.”

“ You just stood there?”

“ Didn’t sell a single one.”

“ My God, Russell!”

Uncle Allen put in, “ Well, I’ve decided to take the Post.” I handed him a copy and he paid me a nickle(五分镍币). It was the first nickle I earned.

Afterwards my mother taught me how to be a salesman. I would have to ring doorbells, address adults with self-confidence(自信), and persuade them by saying that no one, no matter how poor, could afford to be without the Saturday Evening Post in the home.

One day, I told my mother I’d changed my mind. I didn’t want to make a success in the magazine business.

“ If you think you can change your mind like this,” she replied, “ you’ll become a good-for-nothing.” She insisted that, as soon as school was over, I should start ringing doorbells, selling magazines. Whenever I said no, she would scold me.

My mother and I had fought this battle almost as long as I could remember. My mother, dissatisfied with my father’s plain workman’s life, determined that I would not grow up like him and his people. But never did she expect that, forty years later, such a successful journalist as me would go back to her husband’s people for true life and love.

1.Why did the boy start his job young?

A.He wanted to be famous in the future.

B.The job was quite easy for him.

C.His mother had high hopes for him.

D.The competiton for the job was fierce.

2.From the dialogue between the boy and his mother, we learn that the mother was _______.

A.excited           B.interested         C.ashamed          D.disappointed(失望的)

3.What did the mother do when the boy wanted to give up?

A.She forced him to continue.               B.She punished him.

C.She gave him some money.                D.She changed her plan.

4.What does the underlined phrase “this battle”(last paragraph) refer to?

A.The war between the boy’s parents. 

B.The arguing between the boy and his mother.

C.The quarrel between the boy and his customers. 

D.The fight between the boy and his father.

5.What is the text mainly about?

A.The early life of a journalist.

B.The early success of a journalist.

C.The happy childhood of the writer.

D.The important role of the writer in his family.

 

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根据对话内容,从对话后的选项中选出能填入空白处的最佳选项

-Excuse me, sir, but I'm writing a report on what people prefer to do on holiday.Do you mind if I ask you a few questions?

-No.  1  

-Have you ever traveled abroad?

-No I haven't.  2   But if the weather is good, my wife and I can always afford to visit the coast at low expense.  3  .

-Do you usually visit your parents during the holiday?

-No.  4  .

-How often do you go on holiday?

  5  .

-OK.Well, thank you very much.

-You are welcome.

A.It's too expensive for me.

B.We live quite lose and I can see them any time.

C.I don't have enough time.

D.Please go ahead.

E.I just prefer to get away from the city and just enjoy the peace of the country.

F.I only have two weeks' holiday a year.

G.I just prefer to lie on the beach and bathe in the sun.

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