Much of the water we use comes from snow. Melting snow provides water for rivers, electric power centers and agricultural crops. In the western United States, mountain snow provides up to 75% of all surface water supplies.
Snowfall helps to protect plants and some wild animals from cold, winter weather. Fresh snow is made largely of air trapped among the snow crystals. Because the air has trouble moving, the movement of heat is greatly reduced.
Snow also is known to influence the movement of sound waves. When there is fresh snow on the ground, the surface of the snow takes in, or absorbs, sound waves. However, snow can become hard and flat as it becomes older or if there have been strong winds. Then the snow's surface will help to send back sound waves. Under these conditions, sounds may seem clearer and travel farther.
Generally, the color of snow and ice appears white. This is because the light we see from the sun is white. Most natural materials take in some sunlight. This gives them their color. However, when light travels from air to snow, some light is sent back, or reflected. Snow crystals have many surfaces to reflect sunlight. Yet the snow does take in a little sunlight. It is this light that gives snow its white appearance.
Sometimes, snow or ice may appear to be blue. The blue light is the product of a long travel path through the snow or ice. In simple terms, think of snow or ice as a filter. A filter is designed to reject some substances, while permitting others to pass through. In the case of snow, all the light makes it through if the snow is only a centimeter thick. If it is a meter or more thick, however, blue light often can be seen.
【小题1】How many functions of snow are discussed in the passage?

A．One

B．Two

C．Three

D．Four

【小题2】Why does snowfall help to protect plants from cold?

A．Because snow crystals contain heat.

B．Because snow crystals have air in them.

C．Because snow crystals are easy to blow away.

D．Because snow crystals send out heat when melting.

【小题3】It can be inferred that ______.

A．hard snow is better in protecting wild animals than fresh snow

B．fresh snow is better in sending sound waves than hard snow

C．fresh snow is better in taking in sound waves than hard snow

D．hard snow provides less water than fresh snow

【小题4】The color of snow and ice appears white because snow crystals________.

A．send back none of the sunlight	B．send back all of the sunlight
C．take in most of the sunlight	D．take in some of the sunlight

Much of the water we use comes from snow. Melting snow provides water for rivers, electric power centers and agricultural crops. In the western United States, mountain snow provides up to 75% of all surface water supplies.

Snowfall helps to protect plants and some wild animals from cold, winter weather. Fresh snow is made largely of air trapped among the snow crystals. Because the air has trouble moving, the movement of heat is greatly reduced.

Snow also is known to influence the movement of sound waves. When there is fresh snow on the ground, the surface of the snow takes in, or absorbs, sound waves. However, snow can become hard and flat as it becomes older or if there have been strong winds. Then the snow's surface will help to send back sound waves. Under these conditions, sounds may seem clearer and travel farther.

Generally, the color of snow and ice appears white. This is because the light we see from the sun is white. Most natural materials take in some sunlight. This gives them their color. However, when light travels from air to snow, some light is sent back, or reflected. Snow crystals have many surfaces to reflect sunlight. Yet the snow does take in a little sunlight. It is this light that gives snow its white appearance.

Sometimes, snow or ice may appear to be blue. The blue light is the product of a long travel path through the snow or ice. In simple terms, think of snow or ice as a filter. A filter is designed to reject some substances, while permitting others to pass through. In the case of snow, all the light makes it through if the snow is only a centimeter thick. If it is a meter or more thick, however, blue light often can be seen.

1.How many functions of snow are discussed in the passage?

A．One             B．Two              C．Three            D．Four

2.Why does snowfall help to protect plants from cold?

A．Because snow crystals contain heat.

B．Because snow crystals have air in them.

C．Because snow crystals are easy to blow away.

D．Because snow crystals send out heat when melting.

3.It can be inferred that ______.

A．hard snow is better in protecting wild animals than fresh snow

B．fresh snow is better in sending sound waves than hard snow

C．fresh snow is better in taking in sound waves than hard snow

D．hard snow provides less water than fresh snow

4.The color of snow and ice appears white because snow crystals________.

A．send back none of the sunlight             B．send back all of the sunlight

C．take in most of the sunlight                D．take in some of the sunlight

 

A thousand years ago Hong Kong was covered by a thick forest like the forests we now find in Malaysia and Thailand. As more and more ___36___ came to live in Hong Kong, these trees were cut down and burnt. Now there is no forest left, ___37__ there are still some areas covered with trees. We call these __38__.

Elephants, tigers, monkeys and many other animals used to live in the __39__ forests of Hong Kong, and there were even crocodiles in the ___40__ and along the coast. When people came to live in Hong Kong, the animals began to __41___ out. Early farmers grew rice and kept pigs and chickens in the valleys.

They ___42___ the trees and burnt them. They needed fires to keep themselves ___43___ in the winter, to cook their food, and to keep away from dangerous animals. Elephants quickly disappeared because there was not enough ___44___ for them. So did most of the wolves, and tigers. Monkeys, squirrels and many other animals soon died out in the same __45____.

You might think that there are ___46___ any animals in Hong Kong, except in the __47_____. You might think there can’t be any wild animals in such a __48___ place with so many cars and buildings. But there is __49_____ a good deal of countryside in Hong Kong and New Territories, and there are still about thirty-six different kinds of animals living there.

One of the most interesting of Hong Kong’s ____50___ is the barking deer. They are beautiful little creatures with rich, brown coat and a white patch under the tail. They look like deer but they are much ___51___. They are less than two feet high. The male barking deer has two small horns but the female has none. They make a __52____ rather like a dog barking.

Barking deer live in thick shrub（灌木） country and are very good at __53___. They eat grass and shrubs, mainly in the very early morning and late afternoon and evening. This is when you are most likely to see one but you will need to be very quiet and to have very ___54___eyes. In Hong Kong the barking deer has only one ___55_____ ---- man. Although it is illegal, people hunt and trap these harmless little animals. As a result there are now not many left. There are a few on Hong Kong Island but none in the New Territories.

1.	A．people B．children C．ladies D．women

 

2.	A．as B．since C．though D．because

 

3.	A．desert B．shades C．fields D．woods

 

4.	A．thin B．thick C．short D．dying

 

5.	A．rivers B．hills C．sky D．mountains

 

6.	A．die B．look C．come D．get

 

7.	A．planted B．looked after C．cared for D．cut down

 

8.	A．cold B．cool C．warm D．hot

 

9.	A．air B．food C．water D．clothes

 

10.	A．way B．road C．street D．rail

 

11.	A．never B．always C．no D．no longer

 

12.	A．zoos B．shops C．kitchens D．parks

 

13.	A．free B．busy C．big D．large

 

14.	A．no more B．nearly C．still D．hardly

 

15.	A．animals B．plants C．fishes D．birds

 

16.	A．great B．larger C．smaller D．heavier

 

17.	A．noise B．voice C．song D．living

 

18.	A．barking B．eating C．planting D．hiding

 

19.	A．common B．sharp C．clear D．big

 

20.	A．neighbor B．brother C．enemy D．friend

 

I used to work as a waitress in a little restaurant. I felt frustrated then so I had been   31 that period. I hadn’t told anybody except my employer. Somehow a   32  had overheard (无意中听到) my saying that I had to go to another   33 . As I passed her table, she   34  me a card with her phone number on it. She explained that she lived in Sydney and that I should call   35  I needed any help.

Some weeks later, it was time for   36  appointment(约会) in Sydney and I flew there. I was   37  as I had never been there before and didn’t   38  anyone else there. So I   39  to ring the lady who had given me her   40  number, even though I had only met her that once.   41  I had arrived, she was very excited and came   42  to meet me. She gave me a bed and a meal and took me to my appointment the next day and afterwards, she took me back to the   43 .

She treated me so   44  that I offered her a gift to express my   45  but she refused. She said “Your   46  to me is to offer your help to another when it is   47 .” Over the months we kept in touch but then for some reason our communication got less and less   48 .

I always felt I wasn’t giving enough to others as a   49 , but she had told me that I gave her very much and the way I   50  people was a gift. I now give a hand to others every day even if it is only a smile to those who have none to give.

1.                A．going through    B．worrying about   C．wishing for    D．dreaming of

 

2.                A．manager        B．waiter          C．customer D．friend

 

3.                A．restaurant      B．school          C．town D．city

 

4.                A．showed        B．handed         C．lent  D．returned

 

5.                A．before         B．after           C．if    D．because

 

6.                A．her            B．their           C．my  D．his

 

7.                A．pleased        B．tired           C．scared   D．honest

 

8.                A．help           B．know           C．meet D．serve

 

9.                A．decided        B．promised       C．refused   D．expected

 

10.               A．room          B．hotel          C．car   D．phone

 

11.               A．Considering     B．Admitting       C．Learning   D．Thinking

 

12.               A．secretly        B．immediately     C．slowly D．unwillingly

 

13.               A．room          B．airport         C．park  D．station

 

14.               A．calmly         B．warmly         C．coldly D．poorly

 

15.               A．thankfulness     B．concern        C．excitement D．attitude

 

16.               A．advice         B．question        C．pay   D．gift

 

17.               A．needed        B．tested          C．appreciated    D．accepted

 

18.               A．frequent       B．valuable        C．important  D．meaningful

 

19.               A．nurse          B．waitress        C．teacher   D．cook

 

20.               A．laughed at      B．recognized      C．talked about    D．treated