A. begin B. lose C. end D. stop——青夏教育精英家教网—

B

Jungle country is not friendly to man, but it is possible to survive there. You must have the right equipment and you must know a few important things about woodcraft. Then your chances of staying alive are very good.

No one should go into the jungle without the right equipment. You need light weight clothing, a good knife, and a compass. Fishhooks and a line, a rifle, matches in a waterproof container and a poncho are necessary too. So is a mosquito net to protect the head.

In the jungle you can get hopeless lost within five minutes after leaving a known landmark. That is why you should always carry a compass. In open country, during the day, you can tell which way o go by studying the sun. At night the stars are sure guides o direction. But in most places the jungle rooftop is so thick that it is impossible to see the sun or the stars. Again and again you must check your position by the compass.

Keep alert. Watch the ground in front of you carefully. Stop and listen now and again. Avoid haste, and rest often. In a place that is hot and humid, the person who sets a fast pace will soon become tired. A steady, even pace is wisest in the long run.

If you lose your way, don’t panic. Try to desire how long it has been since you were sure of your position. Mark the spot where you are with blazes on a tree. Put them on four sides of the tree, so that you will be able to see them from any direction. Then you can begin retracing your steps, knowing that you can always find the spot from which you started. Except in an emergency, never try to travel through the jungle at night.

Whenever possible, it is wise to follow streams and rivers that are going in your general direction. This may cause you many extra miles of travel. But in the end it will save time and energy. Nothing is more exhausting than hacking a trail cross-through umbrella jungle.

If a river is broad and deep and has no rapids, rafting is the best means of travel. Bamboo grows along the banks of many jungle streams. Since it is hollow and extremely strong, it makes a perfect raft.

Surviving in the jungle is a science. The jungle people have become perfect in this science, and you can too. Learn as much as you can about what to expect in the jungle. Make sure you have the right equipment. Then no part of the jungle will be able to “live off” it for a long time.

1. The author probably advises against traveling at night because ________.

one tends to move too slowly at night

some animals will attack you

emergencies occur most frequently at night

it is more difficult to check your position

2. Following streams and rivers will help you to ________.

avoid animal’s attacks

save many extra miles of travel

avoid crossing unbroken stretches of jungle

have a constant source of drinking water

3. The word “blazes” in Paragraph 5 means _________.

A. marks where bark (树皮) is removed B. light-colored spots

C.bursts of flame D. sides of knife

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阅读理解，阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。

　　When we say older people shrink, we don't mean they become tiny enough to fit in your pocket! We just mean that it's common for older people to become a little shorter over time．This kind of shrinking can't be reversed, although people can slow or stop this process．But why does shrinking happen at all?

　　Because of gravity(that force that keeps your feet on the ground), cushions between the bones in the spine(脊骨), get compressed(压缩, which makes a person lose a little height and become shorter．

　　Another reason why some older people shrink is because of osteoporosis(骨质疏松)．Osteoporosis occurs when bone is broken down and not enough new bone material is made．Over time, bone is said to be lost because it's not being replaced．Bones become smaller and weaker and can easily break if someone with osteoporosis is injured．

　　Older people-especially women, who generally have smaller and lighter bones to begin with-are more likely to develop osteoporosis．As years go by, a person with osteoporosis can get small breaks in bones that are called compression fractures．These breaks cause collapse of the spine and over time the person with osteoporosis can become hunched over(驼背)．

　　Did you know that every day you shrink a little, too? You aren't as tall at the end of the day as you are at the beginning．That's because as the day goes on, water in the disks of the spine gets compressed due to gravity, making you just a tiny bit shorter．Don't worry, though．Once you get a good night's rest, your body recovers, and the next morning, you're standing tall again!

　　Smoking and drinking alcohol can make this problem worse．Want to do something right now to build strong bones? I believe what I will say will help you．

(1)

Which of the following statements is true?
[　　]
A．	For shrinking, people can do nothing about it．
B．	If someone is injured, he will become shorter．
C．	Women have smaller and lighter bones than men．
D．	We aren't as tall at the end of the day as we are at the beginning．

(2)

What should we do if we don't want to shrink faster?
[　　]
A．	We should try to reduce gravity．
B．	We should be careful not to be hurt by others．
C．	We should sleep as long as possible．
D．	We should keep away from smoking and drinking alcohol．

(3)

What is the topic of the passage?
[　　]
A．	How can we stop shrinking?
B．	Why do we shrink?
C．	Some tips on how to keep tall．
D．	How to live a healthy life．

(4)

About osteoporosis we know that ________．
[　　]
A．	gravity is one of the causes of osteoporosis
B．	once our bone is broken down, osteoporosis will occur
C．	women are more likely to develop osteoporosis
D．	if we develop osteoporosis, we are more likely to be shorter

(5)

What will the author talk about in the paragraph to be followed?
[　　]
A．	Tell us how to grow taller．
B．	Tell us how to become healthier．
C．	Tell us how to avoid being shrinking．
D．	Tell us what to do to have strong bones．

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阅读理解

　　As people continue to grow and age, our body systems(系统)continue to change．At a certain point in your life your body system will begin to weaken．Your strength may become weaker．It may become more difficult for you to see and hear．The slow change of aging causes our bodies to lose some of their ability to bounce back from disease and injury．In order to live longer, we have always tried to slow or stop this change that leads us toward the end of our lives．

　　Many factors(因素)decide your health．A good diet plays an important role．The amount and type of exercise you get is another factor．Your living condition is yet another．But scientists studying aging problem want to know：Why do people grow old?They hope that by studying the aging medical science they may be able to make the length of life longer．

　　There is nothing to be afraid of as old age comes．Many consider the later part of life to be the best time for living．Physical activity may become less, but often you get better understanding of yourself and the world．

　　What we consider old age now may only be middle-aged some day soon．Who knows, with so many advances in medical science happening so quickly, life length may one day be measured in centuries, rather than in years!

(1)

When people become aging, they will lose some of their ability to bounce back from dis ease and injury, “bounce back”here means ________．
[　　]
A．	to escape from disease and injury
B．	to improve one's health after one's disease and injury
C．	to jump backward
D．	to run fast

(2)

In order to live longer ________．
[　　]
A．	we have to try to improve our food
B．	we should try to do more exercise
C．	we should slow down the change of aging
D．	we should keep in high spirits

(3)

Many consider the later part of life to be the best time of living because ________．
[　　]
A．	they consider their life has been a successful one
B．	they have come through the battle of life safely
C．	they have less misunderstanding of themselves and the outside world
D．	they have nothing to do all day long only to watch their grandchildren growing up around them

(4)

It may be inferred from the passage that our life length may become ________．
[　　]
A．	longer
B．	shorter
C．	no change
D．	the passage didn't mention