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It was the night of the full moon, a time which always drives Java's young people mad with excitement.
Fireworks were lit long before the moon __1__. The big noise brought people out __2__ the warm night to enjoy the interesting scene. Everywhere, there were the paper remains of __3__ fireworks lying on the ground.Little boys __4__ more and covered their ears as they waited __5__ for the explosions.
The moon appeared above the horizon(地平线)：huge, __6__ ball high above the city, and the __7__ filled with people, as Java began to enjoy one of the year's greatest __8__： the Night of the Full Moon, a festival(节日) that is especially popular __9__ young people.
More and more young Javanese __10__ together and walked slowly through the __11__ joking and chatting, they moved towards the mountain __12__ the city. They continued to climb __13__ they reached the old temple(寺庙) at the __14__ of the mountain.
After they were __15__ the temple, they drank their water and ate their moon－cakes delicious home－made ones, __16__ of dried fruit and nuts. Outside, on the mountain, young people __17__ cross－legged in circles, chatting and telling each other jokes. And __18__， in their hundreds, more young people continued to make their way up the mountain to __19__ the brightly shining moon.
By midnight, the fireworks had stopped shooting up from the __20__city in the valley below them. But during the night, the sound continued to be heard from the distance.
1. A. let out B. gave out
C. came out D. set out
2. A. into B. at C. of D. from
3. A．burning B. used C. exploding D. broken
4. A．lit B. bought C. piled D. removed
5. A. patiently B. calmly C. worriedly D. excitedly
6. A. silver B. new C. colourful D. gold
7. A. mountains B. valleys C. streets D. shops
8. A. games B. meetings C. sports D. events
9. A. for B. to C. with D. in
10. A. danced B. gathered C. drank D. shouted
11. A. village B. scene C. night D. ground
12. A. on the edge of B. on the way to
C. in the center of D. in the direction of
13. A. while B. until C. unless D. though
14. A. tip B. back C. top D. bottom
15. A. inside B. near C. off D. across
16. A. fond B. little C. full D. free
17. A. jumped B. sat C. stood D. bent
18. A. so B. even C. yet D. still
19. A. follow B. show C. notice D. admire
20. A. clean B. gray C. peaceful D. empty
查看习题详情和答案>>In the atmosphere, carbon dioxide acts rather like a one-way mirror or the glass in the roof of a greenhouse which allows the sun's rays to enter but prevents the heat from escaping.
According to a weather expert' s prediction, the atmosphere will be 3℃ warmer in the year 2050 than it is today, if man continues to burn fuels at the present rate. If this warming up took place, the ice caps in the poles would begin to melt, thus raising sea level several metres and severely flooding coastal cities. Also, the increase in atmospheric temperature would lead to great changes in the climate of the northern hemisphere (北半球), possibly resulting in an alteration of the earth's chief food growing zones.
In the past, concern about a man-made warming of the earth has concentrated on the Arctic because the Antarctic is much colder and has a much thicker ice sheet. But the weather experts are now paying more attention to West Antarctic, which may be affected by only a few degrees of warming, in other words, by a warming on the scale that will possibly take place in the next fifty years from the burning of fuels.
Satellite pictures show that large areas of Antarctic ice are already disappearing. The evidence available suggests that a warming has taken place. This fits the theory that carbon dioxide warms the earth.
However, most of the fuel is burnt in the northern hemisphere, where temperatures seem to be falling. Scientists conclude , therefore, that up to now natural influences on the weather have gone beyond those caused by man. The question is: Which natural cause has most effect on the weather?
One possibility is the variable behavior of the sun. Astronomers at one research station have studied the hot spots and "cold" spots (that is, the relatively less hot spots) on the sun. As the sun rotates (使旋转), every 27. 5 days, it presents hotter or "colder" faces to the earth, and different aspects to different parts of the earth. This seems to have a considerable effect on the distribution of the earth's atmospheric pressure, and consequently on wind circulation. The sun is also changeable over a long term: its heat output goes up and down in cycles, the latest trend being downward.
Scientists are now finding shared relations between models of solar weather interactions and the actual climate over many thousands of years, including the last Ice Age. The problem is that the models are predicting that the world should be entering a new Ice Age and it is not. One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia (惯性) of the earth's climate. If this is right, the warming effect of carbon dioxide might thus be serving as a useful opposed balance to the sun's fading heat .
It can be concluded that a concentration of carbon dioxide in the atmosphere would_________.
A. mean a warming-up in the Antarctic
B. raise the temperature of the earth' s surface
C. prevent the sun's rays from reaching the earth's surface
D. explain the cause of great changes in the climate in the northern hemisphere
The article was written to explain ___________.
A. the greenhouse effect
B. the solar effects on the earth
C. the causes affecting weather
D. the models of solar-weather interactions
Although the fuel consumption is greater in the northern hemisphere, temperatures there seem to be falling. This is__________.
A. mainly because the levels of carbon dioxide are rising
B. partly due to changes in the output of solar energy
C. possibly because the ice caps in the poles are melting
D. only due to the effect of the inertia of the earth' s climate
On the basis of their models, scientists believe the opinion that__________.
A. the climate of the world should be becoming cooler
B. the new Ice Age will be delayed by the greenhouse effect
C. the man-made warming effect helps to increase the solar effects
D. it will take thousands of years for the inertia of the earth's climate to take effect
If the assumption about the delay of a new Ice age is correct, ____________.
A. ice would soon cover the northern hemisphere
B. the greenhouse effect could work in favor of the earth
C. the best way to overcome the cooling effect would be to burn more fuels
D. the increased levels of carbon dioxide in the atmosphere could warm up the earth even more quickly
查看习题详情和答案>>We shall not drown if we remember these rules:
- Never swim alone.
- Never swim at a beach if there is no lifeguard.
- Never swim after a meal or when you feel hungry.
- Never rely on rings, floats or other swimming aids. You may lose them or they may let you sink.
- Do not stay in the water too long, especially if it is cold.
- Before you dive, be sure that the water is deep enough and that you will not hit anybody.
- Never go out in a boat if you can’t swim or if you are not wearing a life jacket.
If you fall into difficulty, this is that you should do:
1. Keep calm. Save your strength and breath.
2. Try to float on your back or tread(踩)water. To tread water, move your feet as if you are climbing some stairs.
3. Raise your right arm for help.
Remember: A red flag means that it is dangerous for all swimmers to enter the water. A blue flag means that it is dangerous for children and weak swimmers to enter the water.
1．When you see a red flag, you know that .
A. no one should swim there
B. anyone may swim there
C. only strong swimmers should swim there
D. children should swim there
2．We can go swimming .
A. after a meal B. if we have a ring
C. in deep cold water D. with our friends
3．We should dive only when .
A. the water is deep enough
B. the water is warm
C. the water is cold
D. we are not alone
4．What the writer wants to say is .
A. rings and floats are of no use
B. boats are not safe
C. we must be very careful in swimming
D. swimming is a bad sport
5．We should when in difficulty.
A. hold our breath
B. keep calm and let other know
C. put up our arms
D. be silent
查看习题详情和答案>>
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In the atmosphere, carbon dioxide acts rather like a one-way mirror or the glass in the roof of a greenhouse which allows the sun's rays to enter but prevents the heat from escaping.
According to a weather expert' s prediction, the atmosphere will be 3℃ warmer in the year 2050 than it is today, if man continues to burn fuels at the present rate. If this warming up took place, the ice caps in the poles would begin to melt, thus raising sea level several metres and severely flooding coastal cities. Also, the increase in atmospheric temperature would lead to great changes in the climate of the northern hemisphere (北半球), possibly resulting in an alteration of the earth's chief food growing zones.
In the past, concern about a man-made warming of the earth has concentrated on the Arctic because the Antarctic is much colder and has a much thicker ice sheet. But the weather experts are now paying more attention to West Antarctic, which may be affected by only a few degrees of warming, in other words, by a warming on the scale that will possibly take place in the next fifty years from the burning of fuels.
Satellite pictures show that large areas of Antarctic ice are already disappearing. The evidence available suggests that a warming has taken place. This fits the theory that carbon dioxide warms the earth.
However, most of the fuel is burnt in the northern hemisphere, where temperatures seem to be falling. Scientists conclude , therefore, that up to now natural influences on the weather have gone beyond those caused by man. The question is: Which natural cause has most effect on the weather?
One possibility is the variable behavior of the sun. Astronomers at one research station have studied the hot spots and "cold" spots (that is, the relatively less hot spots) on the sun. As the sun rotates (使旋转), every 27. 5 days, it presents hotter or "colder" faces to the earth, and different aspects to different parts of the earth. This seems to have a considerable effect on the distribution of the earth's atmospheric pressure, and consequently on wind circulation. The sun is also changeable over a long term: its heat output goes up and down in cycles, the latest trend being downward.
Scientists are now finding shared relations between models of solar weather interactions and the actual climate over many thousands of years, including the last Ice Age. The problem is that the models are predicting that the world should be entering a new Ice Age and it is not. One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia (惯性) of the earth's climate. If this is right, the warming effect of carbon dioxide might thus be serving as a useful opposed balance to the sun's fading heat .
66. It can be concluded that a concentration of carbon dioxide in the atmosphere would_________.
A. mean a warming-up in the Antarctic
B. raise the temperature of the earth' s surface
C. prevent the sun's rays from reaching the earth's surface
D. explain the cause of great changes in the climate in the northern hemisphere
67.The article was written to explain ___________.
A. the greenhouse effect
B. the solar effects on the earth
C. the causes affecting weather
D. the models of solar-weather interactions
68. Although the fuel consumption is greater in the northern hemisphere, temperatures there seem to be falling. This is__________.
A. mainly because the levels of carbon dioxide are rising
B. partly due to changes in the output of solar energy
C. possibly because the ice caps in the poles are melting
D. only due to the effect of the inertia of the earth' s climate
69. On the basis of their models, scientists believe the opinion that__________.
A. the climate of the world should be becoming cooler
B. the new Ice Age will be delayed by the greenhouse effect
C. the man-made warming effect helps to increase the solar effects
D. it will take thousands of years for the inertia of the earth's climate to take effect
70. If the assumption about the delay of a new Ice age is correct, ____________.
A. ice would soon cover the northern hemisphere
B. the greenhouse effect could work in favor of the earth
C. the best way to overcome the cooling effect would be to burn more fuels
D. the increased levels of carbon dioxide in the atmosphere could warm up the earth even more quickly
查看习题详情和答案>>