一What's the weather like in this area?-().
A.Very well
B.It's rainy
C.Yes, it's fine
A.Very well
B.It's rainy
C.Yes, it's fine
A. English people are always interested in the weather
B. I have't been practising enough
C. I don't know
D. to meet English people
E. I have some trouble
F. What can I talk about
G. Where should I go
H. May I help you
Max: What's the matter, Peter? You don't look very happy.
Peter: I'm not. I'm worried about my English.
Max: What's the problem?
Peter: (56) .
The source of the sun' s inconstancy is magnetism. Professor William Livingston has developed new theories about its magnetic nature.
"We don' t yet know what causes sun spots, "he says, "but we now think they ' re areas of high level magnetism that come up from the sun' s interior. So strong is their magnetic pull that the highly ionized gas nearby is not able to transmit energy out. "As a result these areas send out less heat and light and thus appear from Earth to be almost dark irregular surface patches.
Sun spot activity generally fluctuates in steady, 11-year cycled. Scientists have long formed the o pinion that as the size and number of sun spots increased, the overall energy sent out by the sun would de crease. Indeed, recent studies confirmed it, revealing that during peak periods of sun spot activity, the Earth experiences a small drop that can be seen clearly in received solar energy.
Could such a small drop in energy have an effect here on earth? Perhaps some scientists think the world temperature could fall by' as much as 0.2 during periods of high solar magnetism.., enough to cause significant fluctuations in weather patterns.
According to the passage, it is believed that the sun ______ .
A.moves in a quick but steady way year after year
B.sends out less and less heat and light with each passing year
C.radiates the same amount of light every year
D.might have a strong influence on the weather patterns
A.affects
B.effects
C.guides
D.directs
______terrible weather we've been having these days!
A. What
B. What a
C. How
D. How a
Many things in nature, such as sunshine, temperature, and precipitation, affect climate. Nearness to mountain, oceans, and large lakes affects it loo. Another factor is altitude, or height above sea level. Air cools as altitude increases. So a city at a higher altitude may be colder than one at a lower altitude. Finally, winds affect climate. They move heat and moisture between the oceans and continents. Winds keep the tropics from overheating. They keep the polar regions from getting overly cold.
Climate changes over long periods of time. Some scientists think, for example, that the earth' s climate changed at the time of the dinosaurs. They think the dinosaurs died because of the change. What causes a climate to change? One possible cause may be changes in the sun. Sunspots, for example, are cool, dark spots that form. on the sun. Sunspots may decrease precipitation on the earth and cause unusually dry periods. Changes in the atmosphere may change climate too. Volcanic eruptions, for instance, release solid particles into the air. These particles may form. a cloud that blocks out the sun ' s heat. Human activity is another cause of climate change. Air pollution and the reduction of forest cover may have long-term effects on climate.
This passage is concerned with things that affect______.
A.precipitation
B.climate
C.altitude
D.sunspots
If you miss Bruce and Robert, you can set your watch when Miss Mary Smith opens the door of the post office. You know it's seven fifty-five. She has five minutes to get ready for work—to put away her raincoat
and take off her hat and coat. Rain or shine, Miss Mary Smith brings raincoat. "You never can tell what the weather will be like when it's time to go home," she always says.
One after another the shops along Main Street open for the day. The clothes shop and the fruit shop get open for business. When Mr. King opens the bookshop, the clock above the shop strides nine.
But every weekday, people go to bed early in Fairfield. The streets are quiet, and the houses are dark when the big clock over the Farmers' Bookshop strikes tell o'clock. The small town is getting ready for tomorrow.
The post office starts its business at ______ every weekday.
A.7:00
B.7:55
C.0.333333
D.0.375
Gorge took ______of the fine weather to do a day's work in this garden.
A.advantage
B.profit
C.watch
D.provided
Prehistoric (史前的)had little choice in what he ate. He ate what he could find: roots, eggs, fruits and the meat of smallanimals. Early man had no way to control his food supply. If there was no rain, or the weather was too hot or too cold,plants would not grow, and he would have little or no food. When he ate all the food in one place, he had to move to anotherregion for food.
Man’s life changed when he learned to grow plants and to raise animals. He also learned to use fire to prepare his food. Later, he learned to make tools and weapons, and to make containers to store his food. Man could now live in one place andproduce his own food. So civilization (文明)began. Great civilizations slowly developed in regions where food wasplentiful — along the Nile River in Egypt, and by the Yellow River in China.
The kinds of plants which are raised by man are different in each geographical region. In the colder regions very fewplants can be grown; in the warmer parts of the world great varieties of plants are found. In Asia, rice has become the mostimportant crop. In North America, the most important grains are wheat and com. In Europe and North Africa, wheat is themain crop. In the tropical (热带的)regions of the world,many kinds of fruit grow naturally or arc planted by man.
With the development of methods of keeping food fresh, it became possible to send most food products from one partof the world to another. Today foods are kept fresh in many ways and sent all over the world. Man no longer depends on thefood he grows in his own area only.
As man has learned more about plants and animals, the production of food has become a more technical process. In thefuture, it seems possible that vast quantities of food may come from the ocean. Food may also be produced in new ways.
According to the first paragraph.man has to ensure________
A.the amount of food he needs
B.the quality of the food he needs
C.the quality of his lifeon theearth
D.the number of people livingon the earth
If the weather was extremely bad, early man would?A.raise new crops
B.suffer from hunger
C.raise small animals
D.suffer from diseases
From Paragraph 3 we know that civilizations developed in areas?A.where the weather was good
B.where there was enough rain
C.where there was a large amountof food
D.where there were a great numberof animals
Which of the following is true according to Paragraph 4?A.There are few plants in colder regions.
B.Corn is the most important crop in Asia.
C.There are few plants in hotter regions.
D.Rice is the main crop in Europe.
As man’s knowledge about plants and animals increases,.A.fewer plants will be needed
B.fewer animals will he available
C.more and more land will be
D.more and more food will he available
请帮忙给出每个问题的正确答案和分析,谢谢!
Which of following is the best title for the passage?
A.Fluctuations in Weather Patterns.
B.Magnetism and the Sun Spots.
C.The Size and Number about the Earth' s.
D.Livingston' s New Theory about the Earth' s Climate.
Due to the bad weather, I had to ask for one day’s leave this morning
A.幸亏
B.凡是
C.尽管
D.由于
The basic source of most water vapor is the ocean, evaporation, vapor transport, and precipitation (陈雨) make up the continuous movement of water from ocean to atmosphere to land and back to the sea. Rivers return water the sea. In an underground arc (弧) of the cycle, flowing bodies of water discharge some water directly into rivers and some directly to the sea.
What might have been discussed before this passage?
A.The ocean.
B.The earth.
C.The rainfall.
D.The atmosphere.