5.take the place of代替 Now cotton can be taken the place of by many other materials. 查看更多

 

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Sarah Williams went to a boarding school.  Here is one of the

letters she wrote to her parents from the school.

Wentworth Girls' School

Beachside

July 20th

Dearest Mom and Dad,

I'm afraid I have some very bad news for you. I have been very naughty and the school principal is very angry with me. She is going to write to you. You must come and take me away from here. She does not want me in the school any longer.

The trouble started last night when I was smoking in bed.  This is against the rules, of course. We are not supposed to smoke at all.

As I was smoking, I heard footsteps coming towards the room. I did not want a teacher to catch me smoking, so I threw the cigarette away.

Unfortunately, the cigarette fell into the waste-paper basket, which caught fire.

There was a curtain near the waste-paper basket which caught fire, too. Soon the whole room was burning.

The principal phoned for the fire department. The school is a long way from the town and by the time the fire department arrived, the whole school was in flames. Many of the girls are in the hospital.

The principal says that the fire was all my fault and you must pay for the damage. She will send you a bill for about a million dollars.

I’m very sorry about this.

Much love,

Sarah

P. S. None of the above is true, but I have failed my exams. I just want you to know how bad things could have been!

1.Why did Sarah write home?

A.To tell her parents about the fire.

B.To ask for a lot of money.

C.To tell her parents she had failed her exams.

D.To tell her parents she had to leave school.

2.Why did Sarah tell her parents the story about the fire?

A.She wanted to worry them.

B.She wanted to make them laugh.

C.She wanted to make them less angry at the real news.

D.She wanted to warn them about what the principal was going to do.

3.The letter before the. P. S. was        .

A.mostly true

B.partly true

C.completely true

D.completely untrue

 

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Save 25% to 50%

New service! US Air means new service from Newark International Airport

????  Minneapolis/St. Paul: only morning nonstop

????  Phoenix: direct morning flight

New service means new savings. Save 25% off our regular fare to Minneapolis/St. Paul and Phoenix with our special introductory fare. Just begin your trip from June 15 through June 29 and travel one way or round trip on our Air. No restrictions(限制)---just saving.

  Save even more--up to 50% --when you choose from over a dozen US Air discount fares--up to 40% for adults, 50% for children 2-17. Restrictions for discount fares vary and seating may be limited, so be sure to plan early. —For complete details on US Air’s new service and our many discount fares, visit your travel agent or cooperate travel office, or call US Air in New York at (212) 7363200, in New Jersey call (201) 6223201.

     To Minneapolis/St. Paul                                     And Back

Depart               Arrive                           Depart          Arrive

9:15 a.m            10:52 a.m                       6:20 p.m         9:30 p.m

         To Phoenix                                           And Back

Depart               Arrive                           Depart          Arrive

9:15 a.m            12:25 p.m                       1:10 p.m         9:30 p.m

         To Boston                                            And Back

Depart               Arrive                           Depart          Arrive

10:00 p.m           10:53 p.m                        7:30 a.m        8:30 a.m

All times are local. All flights to/off from Newark international Airport.

This passage is most probably ______.

  A. a warning       B. a notice       C. an advertisement     D. an announcement

If you want to fly to Boston soon after you come back from Minneapolis, you have to wait for _____.

  A. thirty minutes    B. one hour      C. one hour and a half   D. three hours and ten

Suppose the price of flight ticket is 300 dollars to Phoenix, as a secondary school student, how much can you save after having chosen over a dozen US air discount fares?

  A. 120            B. 150          C. 180                D. 225

According to this form above, ______.

A. all flights from Newark leave in the morning

B. the flight to Phoenix takes three hours and ten minutes.

C. Flights to and from Boston take the same amount of time

D. It’s impossible to return from Phoenix and fly to Boston on the same day     

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根据会话情景和内容,从对话所给定选项中选出能填入每一空白处的最佳选项

--­­--What is on at the Capital Theatre tonight?

----   6   Let’s look at the evening newspaper on page 14.

----Oh, I’ve got it. Tonight is Sister Carrie, and tomorrow is Tea House. Which play do you like best?

----   7   How about you ?

----   8  , so I like to see the new play Sister Carrie. By the way, when does it start?

---- At 8:00 p.m.

---- Good, we have two hours then. How can we get there?

----   9   

----It will take us one and a half hours,  10   How about by taxi?

----I’m afraid there might be a heavy traffic jam.

A.I’ve seen Teahouse many times.

B.We can take the bus.

C.I like both of them.

D.So we won’t have much time to buy tickets.

E.       I know it very well.

F.       I’m not sure.

G.      I like neither of them.

 

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For years, the automobile industry has been testing vehicles that use hydrogen as fuel. Now, people across the United States have had a chance to see and even drive cars that get power from hydrogen fuel cells (燃料电池).

But the hydrogen fuel cell is not a new idea. The fuel cell was first invented by Sir William Grove of Britain in 1839. Since then, many different designs, have been invented. There is one place where fuel cells are a proven technology: in space. The American space agency used fuel cells in its Apollo spaceships in the twentieth century.

The most useful fuel cell for transportation purposes is the Polymer Electrolyte Membrane, or P.E.M. fuel cell. It is simple and can operate at temperatures of sixty to eighty degrees Celsius. That is much lower than other fuel cell designs. A P.E.M. fuel cell has two sides divided by a thin membrane (膜). Hydrogen gas is forced through one side where it comes in contact with a reactive material containing the metal platinum(铂). The membrane separates the electrons(电子) from the protons(质子) in the hydrogen atoms. The protons pass through it to the other side of the fuel cell. But the electrons are captured to do work; like powering a motor. Oxygen from the air is forced into the other side of the fuel cell. There, the gas meets the protons that have passed through the membrane. They combine to form water and heat. A single fuel cell does not produce a lot of electricity. But when many fuel cells are combined, they can produce enough electricity to power a vehicle. The product of the chemical reaction that powers fuel cells is water. This makes fuel cells a very clean technology.

Hydrogen fuel cell cars have been slow to develop because of many technical problems that have to be solved. For example, it is unclear how long the membranes in P.E.M. fuel cells will last. Also, fuel cells need water for their chemical reactions. They must be designed to start easily at low temperatures and in dry climates. And smaller, less costly fuel cells must be designed before they can truly take the place of gasoline engines. Now more models of fuel cell vehicles are being tested than ever before. The threat of climate change and the high cost of oil have increased interest in these vehicles that do not cause pollution.

Title

 More Models of Hydrogen Cars Being Tested

The progress of hydrogen fuel cell

·(1) ________ by Sir William Grove in 1839.

·Designed (2) ________ ever since.

·Used in Apollo spaceships in the twentieth century.

 Operating principle of P.E.M.

·It has two sides divided by a thin membrane.

·Hydrogen gas from one side (3) ________ the active metal platinum.

·The electrons are (4) ________ from the protons in the hydrogen atoms.

·The protons pass through the fuel cell to the other side.

·Oxygen from the air is (5) ________ into the other side of the fuel cell.

·The gas meets the protons,and then water and heat are(6) ________

Reasons for slow (7) ________of hydrogen fuel cell cars

·There are many technical problems (8) ________

·The durability of the membranes in P.E.M. fuel cells is not clear.

·They have to start easily at (9)________ temperatures and in dry climates.

·They must be smaller and less costly before (10) ________ gasoline engines.

 

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(1)Secretary. Part time. 20 hours a week. Busy doctor’s office. Experience preferred. Good typing. Call 555-2438.
 (2)BABY SITTER. 3 to 6 weekday afternoons. I will take you home. $5.00 an hour. Call 555-5593.
 (3)Guitar lessons. Your home or mine. Experienced musician. Master’s degree in music. Call Louise 555-6131.
 (4)TENTH STREET BLOCK PARTY. Sunday, July 15. Noon to 8. Food, games, prizes, live band, Tenth Street between Main and North,
 (5)APARTMENT FOR RENT. 3 sunny rooms on high floor, great view. Separate kitchen. Wall-to-wall carpeting. The living room can be used as dining room. Email: SDGT@163.com.cn.
 (6)TAXI DRIVER WANTED. Full or part time. Experience necessary. A good knowledge of the city is required. Call 555-8860 between 9 a.m. and 5 p.m. weekday.
(7)A stereo system for sale, It has two speakers. The system has an AM/FM radio. It also has a tape deck and turntable. It is in good condition. The stereo was owned for only one year. The price is $200 including the speakers. The owner will also take the highest price offered if the asking price is not met. Call Bill after 6 p.m., at 555-9834.
【小题1】How many of the seven ads are placed by people who want to hire someone for certain job?

A.4B.3C.2D.5
【小题2】Which of the following is true according to the ads above?
A.Those who have some experience in office work will have a better chance to get the job of secretary.
B.The owner of the stereo will never sell his stereo at a price less than $200.
C.The taxi driver is not necessarily familiar with the city.
D.The tenth street block party will last until after 8.
【小题3】We may learn from the ads above that _____.
A.a baby sitter is paid by the hour
B.the party will be held without any music
C.the rooms for rent cannot get good sunlight
D.people can get guitar lessons at any places they like
【小题4】These ads may probably appear in the following media except______
A.a local newspaperB.a page on the internet
C.a government reportD.a special radio program

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