阅读理解

　　It is ten o'clock at night and you are outside. You can see many stars in the sky. Each star is another sun. The sky is big, and it hag many suns.

　　Our sun is near to us. It warms us and gives us light in daytime. The stars are not near. We can see their light only at night, and they do not warm us.

　　The stars are not all the same. Many stars are quite like our sun. They are the same size, and they have the same colour, yellow. Other stars are bigger or smaller. A “giant(巨人)” star is very, very big. A “dwarf(侏儒)”is a small star—smaller than the sun.

　　Stars have different colours, too. They can be blue, orange, yellow, white or red. There are giants and dwarfs in all these colours. All stars are, of course, very hot. The hottest stars are the blue ones. White stars come next, they are less hot. Then yellow and orange stars are less hot again. Red stars are the least hot, and they are also the oldest stars.

　　Light moves very quickly across the sky, eighteen million (18,000,000)kilometers in a minute. Our nearest star is a red dwarf. Its name is Proxima Centauri ( proxima ＝ nearest), and it gives a weak, red light. We can just see this light. It left Proxima Centauri 4.25 years ago, and now tonight, it is reaching cur eyes. Think about it! In one minute, 18,000,000 kilometres. So, in 4.25 years—well, how many kilometers? You can find the answer yourself.

　　I will just say this: Proxima Centauri is a long way from us.

1．According to the temperatures on stars, the right order from the lowest temperature to the highest is ________.

[　　]

A．red→yellow→white→blue

B．orange→red→blue→white

C．blue→white→yellow→red

D．white→blue→orange→red

2．All the following am right except ________.

[　　]

A．a “dwarf” is smaller than the sun

B．there are dwarfs in different colours

C．a “dwarf” is a small star

D．dwarfs are the least hot

3．How far away is the star Proxima Centauri from us?

[　　]

A．40,208,400,000,000 kilometres.

B．9,460,800,000,000 kilometres.

C．679,140,000,000 kilometres .

D．279,225,000,000 kilometres .

4．When we say “The star Procyon is ‘ten light years’ away.”, we mean ________.

[　　]

A．we can reach the star in ten years

B．we first saw the star ten years ago

C．the light left Procyon ten years ago

D．Procyon has been that far away for ten years

Many of us believe that a person’s mind becomes less active as he grows older. But this is not true, according to Dr Jarvik, professor of psychiatry at the University of California. She has studied the mental functioning of aging persons for several years. For example, one of her studies concerns 136 pairs of twins (双胞胎), who were first examined when they were already 60 years old. As Dr Jarvik continued the study of the twins into their 70s and 80s, their minds did not generally decline (衰弱) as was expected.

　　However, there was some decline in their psycho-motor speed. This means that it took them longer to finish mental tasks than it used to. But when speed was not a factor, they lost very little intellectual (智力的) ability over the years. In general, Dr Jarvik’s studies have shown that there is no decline in knowledge or reasoning ability. This is true not only with those in their 30s and 40s, but with those in their 60s and 70s as well.

　　It is true that older people themselves often complain that their memory is not as good as it once was. However, much of what we call “loss of memory” is not that at all. There usually was incomplete learning in the first place. For example, the older person perhaps had trouble hearing, or poor vision, or was trying to learn the new thing at too fast a speed. In the cases where the older person’s mind really seems to get worse, it is not necessarily a sign of decline due to old age. Often it is simply a sign of a sad emotional state. 

1. This passage is mainly about _______.

A. what caused mental decline

B. a new discovery about mental decline

C. the difference between middle-aged and older persons

D. how Dr Jarvik studied mental functioning of the twins

2.The word “psychiatry” in paragraph 1 most probably means _______.

A. the study of diseases of the mind

B. the study of physical diseases

C. the study of twins’ growth

D. the study of human behavior

3.More often than not, what we call mental decline is actually a sign of _______.

A. a worsening state of health               B. old age

C. nervous tension                         D. a state of unhappiness

书面表达

　　据报道，2008年北京奥运会将选拔约10万名志愿者为之服务。请你以“Dos and Don'ts for the 2008 Olympic Volunteers”为题，用英语写一篇短文，讨论志愿者应该做什么，不应该做什么。短文应包括下表中的内容：

注意：1.对所给要点，不要简单翻译，要有适当发挥。

　　2.词数120左右，短文中已写好的部分，不计入总词数。

参考词汇：形象n．image。

　　It is reported that about 100 000 people will be chosen as 

volunteers for the 2008 Olympic Games in Beijing. What should 

the volunteers do and what should they not do?

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　　If I have the honour to be chosen as a volun teer, _______

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