—Have you seen your friend off ?

—Yes. I watched the train leaving the station        it disappeared from sight.

We began to open to the outside world in the late 1970s.    ,there have been great changes in the country.

Hurry up! Flight 4406        off at 18:40.

Tom hasn’t come to work since last Friday.       he have had an accident?

To know more about Japan’s recent claims about Diaoyu Islands, you can use the Internet or watch CCTV news, or       .

The Chinese have        uneasy feeling about       increasing use of foreign words.

上周日，你班开展以“美化城市环境，倡导低碳生活”为宗旨的志愿者活动。活动内容包括：上午去郊区植树；下午去广场宣传，分发传单。请你就这个活动为校报写一篇120个左右词的短文。

你的文章应包括下列要点：

1、 活动宗旨，内容及其对同学的影响；

2、 你的评论。

注意：1．文章的标题和开头已给出(不计词数)。

2．参考词汇：低碳生活 a low-carbon lifestyle 传单leaflet郊区suburb

A voluntary activity

Last Sunday, our class launched a voluntary activity.

______________________________________________________________________

______________________________________________________________________

This morning, a Virgin Atantin 747 Jumbo Jet became the first commercial airplane to fly on biofuel. The short flight from London to Amsterdam used a blend of 20% babassu(棕榈) oil mixed with 80% conventional jet fuel.

What was really exciting about the flight was the fact that the engine did not have to be altered in any way for the biofuel to work While this is a great initial step in trying to reduce CO₂(carbon-dioxide)emissions(排放)from airplanes. there are a lot of hurdles (障碍)that still need to be overcome.

First and foremost, unlike the normal fuel used to run airplanes (known as Jet A),biofuel freezes at high altitudes. Also, Jet‘A’fuel burns consistently (at the same pace),which means it provides a safe and reliable fuel for long flights--engineers are not sure if biofuel will be able to do the same.

The biggest hurdle to a full biofuel switch is our ability to be able to grow enough crops that can be converted to biofuel. There are two concerns that scientists have in this matter – the first is that the land to grow the extra crops will come from clearing more of our forests and the second is that since it competes with what we eat, the price of food will go up.

However, Richard Branson of Virgin Airlines, envisions that if biofuel starts to replace oil on a greater basis, it will be manufactured from algae（藻类）produced in sewage treatment plants, not from food sources.

Birgin Airlines is not the only one trying to look for alternative fuel sources. Earlier this year, an Airbus A380 used another alternative fuel－a man-made mix of gas-to-liquid, in one of its four engines. The flight was tested by Rolls Royce (manufacturer of jet engines), in partnership with Shell (an oil company). Rolls Royce is also working with Air New Zealand on a similar project.

While a complete switch to alternative fuel may take years, it is very encouraging to see airlines, oil companies and airplane manufacturers all coming together to try to make it happen!

1.．Why does Virgin Airlines try to replace normal fuel with biofuel?

2.．Which is NOT true for a full biofuel switch of airplanes?

A Biofuel cannot run for long flights.                  

B．Biofuel cannot work at high altitudes.

C．Man has not enough land to grow extra crops for biofuel. 

D．It’s not easy for sewage treatment plants to manufacture biofuel.

3.．One of the hurdles to be overcome for a full biofuel switch is to          .

4.．We can infer from the last paragraph that          .

5.．Which of the following can best serves as the title of this passage?

It is a matter of common observation that although money income keeps going up over the years, we never seem to become richer. Prices are rising continuously. This condition is what we call inflation: the money supply is becoming inflated so that each unit of it becomes less valuable. We have got used to higher and higher rates of inflation in recent years. What could be bought twenty years ago for one pound now costs well over 2 pounds. And at present this rate of inflation seems to be rising rather than falling. If in the real world our money incomes go up at the same rate as prices do. One might think that inflation doesn’t matter. But it does ------.When money is losing value it also loses one of the qualities of a good money—stability of value. It is no longer acceptable as a store of value; and it becomes an unsuitable means of delayed payment. Nobody wants to hold a wasting possession, so people try to get rid of money as quickly as possible. Inflation therefore simply stimulates（刺激）our spending and discourages saving.

1.From the passage we can know that inflation is a situation in which________.

2.．In the writer’s view, if incomes and prices rise at the same rate, ________.

3.．Under inflation people are likely to ________.

4.．We can conclude according to the passage that ________.

5.. Which of the following words is omitted at the end of the underlined sentence “But it does”?

Rowena and Billy Wrangler are model high school students. They study hard and do extremely well on achievement tests. And next year，Rowena will be attending Harvard University．Billy，her younger brother，hopes to go to Cornell．What makes Rowena and Billy different from most students is that they don't go to school．In fact，they've never been to school．Since kindergarten，they've studied at home．Like many of more than one million people who receive home schooling in the United States, they feel as if they've gotten a good education．

The home-schooling trend began in the U.S．in the 1980s with parents keeping their children out of public schools so they could provide religious education at home. Today，as the home-schooling trend continues to grow，parents are more likely to consider home schooling as an option because they believe schools don't do a very good job of teaching and are occasionally dangerous places．But can parents really do a better job?

The answer in many cases is yes．In many studies，students taught at home ranked average or above average when compared to students who went to public schools．More importantly，these students were often more self-directed and have a greater depth of knowledge．They were well prepared for academic challenges．

One such student，Robert Conrad, now a sophomore at university, claims he really learned how to study and schedule his time during his eight years of home schooling．Still, not every student is as successful as Robert．“For every home-schooling success story，there are an equal number of failures．”states Henry Lipscomb，an educational researcher．“There are just so many disadvantages that students taught at home have to overcome．”For example，they have fewer chances to get in touch with others of their own age．Consequently，they sometimes lack the usual social skills．“No matter what，though，”states Lipscomb，“home-schooling is a growing trend．I think we'll be seeing more and more of this．”

1.Compared with other students, Rowena and Billy are most different in the fact that    .

2.．At first in the 1980s parents gave home-schooling to children for    .

3.．According to the article, what is NOT the advantage of being educated at home?

4.．The writer thinks    .

5.．The best title of this text might be    .