A series of such storms struck the US last month and caused very serious damage and human pain.
Every year, major storms cause many problems around the world. There is nothing people can do to stop these powerful forces of nature. But new techniques are helping scientists to predict how, when, and where big storms will happen. The more exact scientists’ warnings are, the better people can prepare for the storms.
Predictions are improving. “We’ve gotten better over the years, especially the last few years,” says Phil Klotzback, a scientist at an American university. How is a storm formed? Even if scientists know where a storm will happen, winds can suddenly change, carrying the storm to a new direction. “For a hurricane to happen, conditions have to be just right,” Klotzback says.
First, the ocean water needs to be warm enough so that it evaporates and rises into the air. As it rises, the vapor(水蒸气)cools and turns back into liquid. This process gives off heat. This produces energy like an engine that causes winds to increase. It drives the formation(形成)of a hurricane.
If wind speeds reach 40 miles per hour, the system is called a “tropical storm”, and it gets a name. At 75 miles per hour, it becomes a hurricane.
Hurricanes that hit the US start when a thunderstorm forms off the coast of Africa. Storms also develop over tropical waters in other parts of the world.
On average, 60 or 70 storms form off Africa every year. About 10 of them get names. There are usually about six hurricanes. Two tend to be very big, with winds of 115 miles per hour or higher.
The hurricane season lasts from June to November. Ninety percent of all hurricanes hit in August, September, and October.
1. According to the passage, hurricanes usually ___________.
A.form off the coast of Africa and America |
B.hit parts of the world in summer and autumn |
C.travel at 40 miles per hour and get its name |
D.cause sea winds to rise and blow over the sea |
A.begins to move | B.changes into a gas |
C.becomes hot | D.gets lost |
a. The ocean water evaporates and goes into the air.
b. Heat creates energy and causes winds to increase.
c. The vapor cools.
d. The ocean water is warm enough.
e. The vapor changes back into liquid.
f. This course gives out heat.
A.a, d, e, b, c, f | B.a, b, c, f, d, e |
C.d, a, b, c, e, f | D.d, a, c, e, f, b |
A.One out of six or seven storms get names. |
B.Every year at least 60 storms form off Africa. |
C.The speed of the biggest two hurricanes reaches 115miles per hour. |
D.About one third of the hurricanes tend to be very big. |
2 . Like all big cities, Paris has a traffic problem: lots of cars, lots of traffic jams and lots of pollution from exhaust fumes (废气). So the city began a project to improve the situation.
Under the Velib project (‘Velib’ comes from velo liberty, or ‘bicycle freedom’) people can take a bicycle, use it for as long as they want, and then leave it at the same or another bicycle station. The first half-hour on the bike is free, but if you don’t return it after 30 minutes, you have to pay. But it’s only €1 a day or €29 a year! The bicycles are heavy (25 kg), and they are all gray and have baskets. There are about 20,000 of them in the city, and around 1,450 bicycle stations. So there are a lot more Velib stations than the 298 subway stations!
Paris is not the first city to have a project like this. But not everybody thinks it’s a great idea. One Parisian said, “These bicycles are only for short journeys. If people want to travel across the city, they won’t use a bicycle - they’ll still use their cars.”
A city spokesman said, “The bicycle project won’t solve all our traffic problems, of course. But it might help reduce air pollution. Traffic, together with factory fumes, is a big problem. There aren’t any simple answers to traffic problems and pollution in cities. But unless we do something now, there will be more traffic jams and temperatures will continue to rise, so the problems in our environment will get worse. The bikes might help people to lead a healthier life, too.”
1. What can we learn about the Velib project?A.Its bikes have no baskets. | B.Its bikes are light and colorful. |
C.It aims to make traveling easier. | D.It owns more stations than the subway. |
A.Free. | B.€1. |
C.€29. | D.€30. |
A.The cost is rather high. |
B.It’s hard to find a Velib station. |
C.It’s not suitable for a long journey. |
D.The distance between two Velib stations is long. |
A.Worried. | B.Positive. |
C.Uncaring. | D.Doubtful. |
Don’t lose your head when a fire breaks out. First, telephone the fire department immediately when
In short, if you make preparations before hand and take precautions(预防措施) during the fire, chances are that
These rules say that nature should decide what happens to the park. Alsten also writes that the elk herd(马鹿群) has grown too big. The elks walk on the riverbanks. They eat the new grass and roots of baby trees. The beavers (河狸) need the trees to build dams.
The dams raise the water levels. Higher water levels put more water into the soil. Moist soil helps plants grow faster. The plants offer homes and food to other animals.
Chase thinks that the park rules would work only in a park with natural settings. He believes that Yellowstone has had an artificial setting for a long time. The native people left. The wolves were taken away and other animals were removed.The areas of land were fenced off and other animals added.He thinks the park rules that let herds grow too big and the fires burn are hurting the nature of the park.
The park manager thinks the rules are good and that the park will be fine. Chase thinks the way the people run the park should be changed.
1. In Chase’s opinion, too many elks in the park will ___.
A.cause great fires | B.break the balance of nature |
C.destroy the dams | D.do no damage at all |
A.no longer in a natural state | B.still in a natural state |
C.well protected | D.well managed |
A.be quickly changed | B.be completely replaced |
C.no longer work | D.continue to work |
The answer is that your way of life, wherever you live in the world, is tied to the tropics in many ways. If you live in a house, wash your hair, eat fruits and vegetables, drink soda, or drive a car, you can be certain that you are affected by the loss of tropical forests.
Take rubber(橡胶) for example. For many uses, only natural rubber from trees will do. Synthetics are not good enough. Today over half the world's commercial(商业的)rubber is produced in Malaysia and Indonesia, while the Amazon's rubber industry produces much of the world's four million tons. And rubber is an important material in making gloves, balloons, footwear and many sporting goods. Thousands of other tropical plants are valuable for their industrial use.
Many scientists strongly believe that deforestation contributes to the greenhouse effect—or heating of the earth from increased carbon dioxide in the atmosphere. As we destroy forests, we lose their ability to change carbon dioxide into oxygen.
Carbon dioxide levels could double within the next half-century, warming the earth by as much as 4.5 degrees. The result? A partial melt-down of polar ice caps, raising sea levels as much as 24 feet; even 15 feet could threaten anyone living within 35 miles of the coast. Unbelievable? Maybe. But scientists warn that by the time we realize the severe effects of tropical deforestation, it will be 20 years too late.
Can tropical deforestation affect our everyday lives? Now, you should have got the answer.
1. The underlined word "synthetics" probably means a kind of __________.
A.natural rubber | B.tropical grass |
C.man-made material | D.tropical tree |
A.tell people how to avoid the tropical deforestation |
B.show us how important it is to protect the tropical forests |
C.persuade people to buy something synthetic |
D.let people realize the good effect of tropical deforestation |
A.puzzling | B.cold |
C.supporting | D.opposed |
6 . In our modern world, when something wears out, we throw it away and buy a new one. The
How did we
Another cause is our
Our appetite for new products also
All around the world, we can see the
Maybe there is another way out. We need to repair our possessions
A.key | B.reason | C.project | D.problem |
A.gifts | B.rubbish | C.debt | D.products |
A.face | B.become | C.observe | D.change |
A.hide | B.control | C.replace | D.withdraw |
A.Thanks to | B.As to | C.Except for | D.Regardless of |
A.safe | B.funny | C.cheap | D.powerful |
A.love | B.lack | C.prevention | D.division |
A.sensitive | B.kind | C.brave | D.busy |
A.ways | B.places | C.jobs | D.friends |
A.donate | B.receive | C.produce | D.preserve |
A.adapts | B.returns | C.responds | D.contributes |
A.tired of | B.addicted to | C.worried about | D.ashamed for |
A.newer | B.stronger | C.higher | D.larger |
A.pick up | B.pay for | C.hold onto | D.throw away |
A.advantages | B.purposes | C.functions | D.consequences |
A.show | B.record | C.decrease | D.measure |
A.technology | B.environment | C.consumers | D.brands |
A.However | B.Otherwise | C.Therefore | D.Meanwhile |
A.by | B.in favour of | C.after | D.instead of |
A.spending | B.collecting | C.repairing | D.advertising |
1.对生活造成的影响;
2.建议采取的措施。
要求:1.词数100左右;
2.开头已给出,不计入总词数。
参考词汇:零霾smog
Recently smog has occurred in many areas of China, _____________________________________________
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Escaping a fire is a serious matter. Knowing what to do during a fire can save you life. It is important to know the ways you can use and show them to everyone in the family, such as stairways and fire escapes, but not lifts.
From the lower floors of the buildings, escaping through windows is possible, learn the best way of leaving by windows with the least chance of serious injury.
The second floor window is usually not very high from the ground. An average person, hanging by the finger-tips will have a drop of about six feet to the ground. It is about the height of an average man. Of course, it is safer to jump a short way than to stay in a burning building.
Windows are also useful when you are waiting for help. Be sure to keep the door closed. Or smoke and fire may be drawn into the room. Keep your head low at the window to be sure you get fresh air rather than smoke that may leaked(渗) into the room.
On a second or third floor, the best windows for escape are those that open onto a roof. From the roof a person can drop to the ground more safely. Dropping onto cement(水泥) might end in injury. Bushes(灌木丛) and grass can help to break a fall.
根据以上短文内容,然后从每题所给的四个选项中选择最佳选项。
1. It is important to _______.
A.put out the fire in the burning house |
B.know the ways to escape the fire |
C.jump off a burning house |
D.keep the door closed |
A.if there are some bushes on the ground |
B.if you are strong enough |
C.if you live on a lower floor |
D.If you have a long rope |
A.You can escape though stairways. |
B.You can choose fire escapes. |
C.Escape from the windows that open onto a roof. |
D.Use a lift to come down at once. |
A.you can get fresh air | B.you can call for help |
C.you can easily jump off | D.you can be seen first |
A.Escaping from the Windows |
B.Save Yourself in the Burning House |
C.Knowledge on Fire |
D.Waiting for Help |
“What’s the matter, dear?” asked her mum.
Juliet replied, “Mum, there’s so much trash on the ground.”
Juliet’s mum looked around. There was paper, boxes and glass bottles everywhere.
“What can we do?” asked Juliet.
“I’m sure you will think of something,” said her mum.
As soon as Juliet and her mum went home, Juliet painted a picture of the park and wrote a sign in large black letters at the top of the picture. The sign read “PLEASE KEEP OUR PARK CLEAN”. Later, she took plenty of bags and went back to the park with her mum. Juliet put up her picture on a big trash can (垃圾桶).
“Will you help me pick up the trash, Mum?” Juliet said as she handed her mum a bag.
“I sure will,” replied her mum.
The children at the park ran over to see what was going on. Juliet handed them each a bag. “Let’s clean this place up,” said Juliet. Then they began to pick up the trash, talking and laughing. Soon all the bags were full.
“We need to come back another day. There’s still some trash on the ground, but the park looks much better,” said Juliet.
Her mum said, “So it does. I knew you would think of a way to help.”
1. Why was Juliet sad?
A.Because the weather was bad. |
B.Because she couldn’t find her mum. |
C.Because her friends were not at the park. |
D.Because there was too much trash at the park. |
A.show off her painting skills |
B.give her mum a big surprise |
C.encourage people to keep the park clean |
D.show people how beautiful the park was |
A.was proud of Juliet |
B.was angry with Juliet |
C.thought Juliet was lazy |
D.thought Juliet was difficult |
A.They laughed at Juliet. |
B.They had an awful and tiring day. |
C.They bought some bags from Juliet. |
D.They joined Juliet in picking up the trash. |
A.A cleanup story. |
B.Juliet and her mum. |
C.A beautiful park. |
D.How to protect the environment. |
10 . Since the first Earth Day in 1970, Americans have gotten a lot “greener” toward the environment. “We didn’t know at that time there even was an environment, let alone that there was a problem with it,” says Bruce Anderson, president of Earth Day USA.
But what began as nothing important in public affairs has grown into a social movement .Business people, political leaders, university professors, and especially millions of grass-roots Americans are taking part in the movement. “The understanding has increased many, many times,” says Gaylord Nelson, the former governor from Wisconsin, who thought up the first. According to US government reports, emissions (排放)from cars and trucks have dropped from 10.3 million tons a year to 5.5 tons .The number of cities producing CO beyond the standard has been reduced from 40 to 9. Although serious problems still remain and need to be dealt with, the world is a safer and healthier place. A kind of “Green thinking” has become part of practices.
Great improvement has been achieved. In 1988 there were only 600 recycling programs; today in 1995 there are about 6,600. Advanced lights, motors, and building designs have helped save a lot of energy and therefore prevented pollution.
Twenty –five years ago, there were hardly any education programs for environment. Today, it’s hard to find a public school, university, or law school that does not have such a kind of program. “Until we do that, nothing else will change!” says Bruce Anderson.
1. According to Anderson, before 1970, Americans had little idea about ___.A.the social movement | B.recycling techniques |
C.environmental problems | D.the importance of Earth Day |
A.The grass –roots level. | B.The business circle. |
C.Government officials. | D.University professors. |
A.They have cut car emissions to the lowest. |
B.They have settled their environmental problems. |
C.They have lowered their CO levels in forty cities. |
D.They have reduced pollution through effective measures. |
A.Education. | B.Planning |
C.Green living | D.CO reduction |