Probably the most typical mirage picture is one of a lake in a waterless desert. There may even be the appearance of waves breaking on the shore. The easiest form of mirage to study, however, is one that has been seen by millions of people—those seeming strips(条状) of water on asphalt-surfaced(沥青路面的) highway go suddenly out of sight when one comes near them.

Gordon says Operation Long Distance as the most puzzling of mirage forms, since it  ifies(使无效) a basic law of physics. The law states that the apparent size of an object seems to become smaller as we move away from it; however, this kind of mirage will carry a picture of a ship, a town, or an island a thousand miles and set it up in the sky as big as life.

Mirages may have had an effect on history: a World War Ⅰ story, which has not been really verified(考证), deals with a crucial(决定性的) battle between the Turks and the British. Supposedly, the stronger Turkish army was gaining the advantage when one of its outposts reported British reinforcements(援兵) advancing. After a hurried conference, the Turkish forces withdrew. In reality there were no advancing British troops(军队)—what had been reported was a mirage showing men who were a hundred miles away.

1. The air that carries the mirage acts as 　　　　　　   .

A. a lens　　　　　　　　　　　　　　　　　　　　　　　　　　　　  B. a mirror

C. an absorbent(吸收剂)　　　　　　　　　　　　　　　　　　　　  D. a camera

2. The strips of water are the easiest form of mirage to study because they 　　　　　　   .

A. can be produced in the lab

B. appear quite often

C. have been noted all over the world

D. do not break up in a light gentle wind

3. The passage states that mirages may 　　　　　　   .

A. be reproduced in several places at the same time

B. be enlarged to huge proportions(比例)

C. last for several days

D. be carried a thousand miles

4. The author implies that history might have recorded a different winner in one battle if 　　　　　　   .

A. the Turks had described a mirage correctly

B. British troops had not been advancing

C. a Turkish outpost had not mistaken a mirage for a British advance

D. a British outpost had not reported a distant mirage

Mirages(海市蜃楼) are produced by refraction(折射) of light within a layer(层), or lens(透镜), of air. This layer of air, says meteorologist James. H. Gordon, resists disruption(混乱), even in a fairly strong wind.

Probably the most typical mirage picture is one of a lake in a waterless desert. There may even be the appearance of waves breaking on the shore. The easiest form of mirage to study, however, is one that has been seen by millions of people—those seeming strips(条状) of water on asphalt-surfaced(沥青路面的) highway go suddenly out of sight when one comes near them.

Gordon says Operation Long Distance as the most puzzling of mirage forms, since it  ifies(使无效) a basic law of physics. The law states that the apparent size of an object seems to become smaller as we move away from it; however, this kind of mirage will carry a picture of a ship, a town, or an island a thousand miles and set it up in the sky as big as life.

Mirages may have had an effect on history: a World War Ⅰ story, which has not been really verified(考证), deals with a crucial(决定性的) battle between the Turks and the British. Supposedly, the stronger Turkish army was gaining the advantage when one of its outposts reported British reinforcements(援兵) advancing. After a hurried conference, the Turkish forces withdrew. In reality there were no advancing British troops(军队)—what had been reported was a mirage showing men who were a hundred miles away.

1. The air that carries the mirage acts as 　　　　　　   .

A. a lens　　　　　　　　　　　　　　　　　　　　　　　　　　　　  B. a mirror

C. an absorbent(吸收剂)　　　　　　　　　　　　　　　　　　　　  D. a camera

2. The strips of water are the easiest form of mirage to study because they 　　　　　　   .

A. can be produced in the lab

B. appear quite often

C. have been noted all over the world

D. do not break up in a light gentle wind

3. The passage states that mirages may 　　　　　　   .

A. be reproduced in several places at the same time

B. be enlarged to huge proportions(比例)

C. last for several days

D. be carried a thousand miles

4. The author implies that history might have recorded a different winner in one battle if 　　　　　　   .

A. the Turks had described a mirage correctly

B. British troops had not been advancing

C. a Turkish outpost had not mistaken a mirage for a British advance

D. a British outpost had not reported a distant mirage

书面表达

　　下面的图画描述的是你的一段亲身经历，请用英语写一则日记．

　　注意：1．日记必须包括图画所表现的主要内容，可以适当增加或减少细节，使其连贯并完整．

　　2．时间：2002年10月8日，星期二；天气：晴天．

　　3．词数：100左右．

A friend in need is a friend indeed. 是一句谚语。请根据自己的理解和经验，参考所给的汉语提示，以Ways of Making Friends为题写篇短文。词数 100 左右。
　　要求提示：
　　１、每个人都需要朋友，如何交友极为重要。
　　２、要交朋友，首先对别人要友好。微笑是吸引别人的吸铁石（magnet）。
　　３、要使陌生人不管在何处，都能感到你的亲切。要关心别人胜过关心自己，不要以貌取人。
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提示：你校学生会将为来访的美国朋友举办一个晚会，要在学校广播中宣布此事，并欢迎大家参加。为使美国朋友听懂，请你用英语写一篇广播通知。要点如下：

　　宗旨：　　欢迎来访的美国朋友

组织者：　学生会

时间：　　8月15日(星期六)晚7:30

地点：　　主楼屋顶花园

活动内容：音乐、跳舞、唱歌、游戏、交换小礼品（请包装好、签名并在包装外面写上几个祝愿词）

注意：

①       广播稿约100词。

②       应包括以上要点，但不要逐字翻译，要组织成一篇通顺连贯的短文。

生词：交换礼品——to exchange gifts

　　　   学生会——the Student Union

May I have your attention, please? I have an announcement to make.__________________________

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