假定英语课上老师要求同桌之间交换修改作文，请你修改你同旧式写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

删除：把多余的词作斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1. 每处错误及其修改均仅限一词；

2. 只允许修改10处，多者（从第11处起）不计分。

Ladies and gentleman,

May I have your attention, please?         

All flights this morning have put off, because our air is covered with thick fog. As there has no wind, the weatherman is unable to tell that the fog will clear up. We cannot do anything but waiting. Please keep in order and take good care of your baggage. Passengers, please don’t leave for the waiting room. As soon as the weather turns favorable, and we shall announce flights. For passengers stayed at the airport, lunch is free. It will    be served in the dining hall in the second floor from eleven o’clock to one o’clock. By the way, there is no plane to arrive within a hour.

Sometimes, the simplest ideas are the best．For example, to absorb heat from the sun to heat water, you need large, flat, black surfaces．One way to do that is to build those surfaces specially, on the roofs of buildings．But why go to all that trouble when cities are full of     black surfaces already, in the form of asphalt （柏油） roads?
Ten years ago, this thought came into the mind of Arian de Bondt, a Dutch engineer．He finally persuaded his boss to follow it up．The result is that their building is now heated in winter and cooled in summer by a system that relies on the surface of the road outside．
The heat-collector is a system of connected water pipes．Most of them run from one side of the street to the other, just under the asphalt road．Some, however, dive deep into the ground．
When the street surface gets hot in summer, water pumped through the pipes picks up this heat and takes it underground through one of the diving pipes．At a depth of 100 meters lies a natural aquifer （蓄水层） into which several heat exchangers （交换器） have been built．The hot water from the street runs through these exchangers, warming the ground-water, before returning to the surface through another pipe．The aquifer is thus used as a heat store．
In winter, the working system is changed slightly．Water is pumped through the heat exchangers to pick up the heat stored during summer．This water goes into the building and is used to warm the place up．After performing that task, it is pumped under the asphalt and its remaining heat keeps the road free of snow and ice．
【小题1】Which of the following is true according to the first two paragraphs?

Only in that way ______ ready for the challenges and opportunities in life.

    A. will we be       B. we will be       C. will be we    D. we shall be

Directions：For each blank in the following passage there are four words or phrases marked A，B，C and D．Fill each blank with a word or phrase that best fits the context．

In the past, man didn’t have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be 36   .

Today things are 37  , and the world has become too  38  . We’re using up our natural resources too quickly, and at the same time we are   39   our environment with dangerous chemicals. If we continue to do this, human life on the earth will not survive.

Everyone 40   today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing 41   , more and more fish are caught. We know that if too many trees are cut down, forests will disappear and nothing will grow on the land. Yet, we   42  to use bigger and more powerful machines to cut down more and more trees.

We know that if rivers are polluted with waste products from factories, we’ll die.  43  , in most countries wastes are still put into rivers or into the sea, and there are 44   laws to stop this.

We know, too, that if the 45   of the world continues to rise at the present rate, in a few years there will not be enough food . What can we do to solve these problems? 

If we eat more vegetables and less meat there will be more food available for every one. Land that is used to grow crops   46   five times more people than land where animals are kept. Our natural resources will last longer if we learn to recycle them.

The world population will not rise so quickly if people use modern methods of birth control.

Finally, if we educate people to think about the problems, we shall have a better and cleaner 47    in the future.

1.A. beautiful       B. unlimited       C. rare              D. valuable

2.A. common       B. the same         C. changeable         D. different

3.A. crowded       B. small            C. dirty             D. busy

4.A. protecting      B. saving           C. polluting           D. fighting

5.A. wonders       B. realizes          C. considers          D. discovers

6.A. poles         B. boats            C. methods            D. ideas

7.A. continue       B. have             C. ought                 D. go on

8.A. Thus              B. However       C. Generally speaking    D. Therefore

9.A. too many      B. a few           C. some                 D. few

10.A. production     B. pollution           C. population             D. revolution

11.A. feeds          B. increases           C. supplies          D. helps

12.A. nature         B. sea             C. planet            D. forest