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Wouldn’t it be great if you could just look up at the sky and read the weather forecast right away? Well, you can. The forecast is written in clouds. If you can read that writing, you can tell something about the atmosphere. With some practice, you can become a pretty good weather forecaster. Who knows, you might even do as well as meteorologists.
Meteorologists use much more information than just the appearance of the clouds to make their forecasts. They collect data from all over the world. Then they put it into powerful, high-speed computers.
This does give meteorologists an advantage, because they can track weather patterns as they move from west to east across the country.
But you have an advantage, too. You can look at the sky and get your data directly. A meteorologist uses a computer forecast that takes several hours to make a local forecast.
What are you seeing when you look at a cloud? “A picture of what moisture is doing in the atmosphere,” says meteorologist Peter Leavitt. There’s moisture throughout the atmosphere. Most of the time you don’t see it ,because it’s in the form of an unseen gas called water vapor.
Sometimes, the temperature of the air gets cold enough to cause the water vapor to change into liquid water. That’s called condensation, and we see it happen all the time(for example, when damp air hits the cold glass of a mirror). When enough water vapor condenses, tiny drops form in the air. These drops spread light. A cloud is seen. Watching clouds over a day or two tells you a lot more than a single cloud about the weather to come. Changes in clouds show changes in the atmosphere.
You should begin to notice patterns. Certain clouds, following each other in order, can signal a coming storm. But don’t take our word for it; see for yourself.
57．This passage mainly tells us about how to_______.
A．become a meteorologist B．keep an eye on the weather
C．be an assistant to a meteorologist D．change water vapor into liquid water
58．According to the passage, ordinary people might do as well as meteorologists in weather forecast________.
A．with the help of the high-speed computers
B．through a complex process of calculation
C．with simple practice looking up at the sky
D．asking for information from weather station
59．Your advantage in weather forecasts is that______.
A．you have more powerful computers at home
B．your brain works as well as a high-speed computer
C．you observe the sky and obtain your data directly
D．meteorologists give their data to you as soon as they get them
60．What causes vapor to change into water?
A．A lot of moisture. B．Thick clouds.
C．Warm atmosphere. D．Cold air temperature.
Our society reports many negative messages about bicycling in traffic. Bicycling in traffic is considered by many to be reckless and sometimes rude. The most common advice given to cyclists is to avoid busy roads that provide convenient access to important places, which means they should only go to unpopular destinations on undesirable and inconvenient roads. Another popular idea is that cyclists should stay as close to the edge of the road as possible in order to stay out of the way of cars. Getting in the way of cars is considered to be an invitation to death, because car drivers are often expected to run into anything that is slower or more vulnerable. Going together with motor traffic used to be regarded as a nice idea for cyclists, but today it is thought to be suicide. Roads are believed to be designed for cars and not for bicycles. Inferior bicycles may hold that they have the right to use the road, but they had better stay out of the way of superior users or they will be “dead right”.
As a result of these “common-sense” beliefs, bike safety programs developed by motoring organizations and “pedestrian-style” cyclists during the 20th century attempted to teach cyclists to provide a clear path to motorists at all times by hugging the edge of the road, riding on sidewalks so cyclists can see when to get out of the way. Some towns tried to prohibit bicyclists from operating on important roads or roads without shoulders. Engineering projects designed for bicycle safety have involved construction of side paths to get cyclists off roads and bike lanes to keep cyclists out of the way of motorists. The benefit of these efforts is to protect cyclists from collisions from behind, which are widely believed to be the greatest danger to cyclists and caused by cyclists’ failure to keep up with the desired speed of motor traffic. This is the taboo that harms the bicycle transportation policy: that bicyclists must be kept out of the paths of motorists or they will surely be killed.According to the author, bicycling should be ________.
| A．supported | B．banned |
| C．controlled | D．cancelled |
From the first paragraph, the person riding a bicycle in the city should take ________.
| A．main roads | B．streets |
| C．highways | D．sidewalks |
Why do many people do not agree that people should ride bicycles on roads?
| A．Most people think roads are designed for cars not for cyclists. |
| B．People riding bicycles are considered to be inferior. |
| C．People’s riding on the road is against the law of the country. |
| D．People riding bicycles are not experienced. |
The underlined phrase “cyclists’ failure to keep up with the desired speed of motor traffic” in the second paragraph means ________.
| A．cyclists’ speed is beyond the limit |
| B．cyclists’ speed is much lower than that of motorists |
| C．cyclists often compete with motorists on the roads |
| D．motorists usually look down upon cyclists |
What does “superior users” in paragraph one refer to?
| A．Bicyclists. | B．Government leaders. |
| C．Motorists. | D．Pedestrians. |
In earliest times, men considered lightning to be one of the great mysteries of nature. Some ancient peoples believed that lightning and thunder were the weapons of the gods.
In reality, lightning is a flow of electricity formed high above the earth. A single flash of lightning 1.6 kilometres long has enough electricity to light one million light bulbs.
The American scientist and statesman, Benjamin Franklin, was the first to show the connection between electricity and lightning in 1752. In the same year he also built the first lightning rod (避雷针). This device protects buildings from being damaged by lightning.
Modern science has discovered that one stroke of lightning has a voltage (电压) of more than 15 million volts. A flash of lightning between a cloud and the earth may be as long as 13 kilometers, and travel at a speed of 30 million meters per second.
Scientists judge that there are about 2,000 million flashes of lightning per year. Lightning hits the Empire State Building in New York City 30 to 48 times a year. In the United States alone it kills an average of one person every day.
The safest place to be in case of an electrical storm is in a closed car. Outside, one should go to low ground and not get under a tree. Also, one should stay out of water and away from metal fences. Inside a house, people should avoid open doorways and windows and not touch wires or metal things.
With lightning, it is better to be safe than sorry.People once thought lightning came from ________.
| A．the sky | B．the gods |
| C．the earth | D．nature |
According to the passage what do you think all buildings need?
| A．Metal fences. | B．Electricity. |
| C．lightning rods. | D．Machines. |
Lightning can travel ________.
| A．as quickly as water |
| B．not so quickly as electricity |
| C．at very low speed |
| D．at very high speed |
Which of the following is NOT true?
| A．In the U.S. about 360 people die from lightning in a year. |
| B．The Empire State Building frequently gets hit by lightning. |
| C．Swimming during a thunder storm is a good idea. |
| D．A closed car is the best place to be during an electrical storm. |
Lightning is probably ______ to man.
| A．useful | B．kind | C．useless | D．Friendly |
Did you know that reading can keep your mind active and engaged well into old age?
Several years ago when I was working as a newspaper reporter, I interviewed a woman who was a resident at a local nursing home. She was 100 years old. She read at least one book per week, mostly novels. She was bright, intelligent and fun to talk with.
“I love to read. It helps me keep up with what’s going on in the world,” she said. “A friend of mine brings me a new book every week. I look forward to her visits and I look forward to the books.”
“I can’t get around much any more,” said the 100-year-old woman, “but when I read, I can go anywhere, anytime I want. And no one has to help me!”
Reading also sets a good example for younger generations. I have observed that the best readers are those students who see their parents reading. And I’m not talking about only reading novels. Newspapers and magazines are important too. Your actions will communicate a great deal to your children and grandchildren about what you value.
But why is reading so important? In this day and age, with television to give us news, and movies and videos to keep us entertained, who needs to read?
The answer is everyone.
Developing good reading skills does not only mean that you can read a novel or a magazine, it also means being able to read and understand things like a credit card contract or an insurance policy, or the instructions for how to put a new printer to use with your computer. In addition, developing good reading skills means that you can think for yourself. You can read about the advantages and disadvantages of anything from homeschooling to taking a vacation to Ireland. And then you can make up your own mind about what’s best for you and your family.The example of the 100-year-old woman is used to _______.
| A．inform us of a woman who loved reading |
| B．show a new way of gaining information |
| C．find differences between books and travels |
| D．introduce the benefits of reading books |
The 100-year-old woman loved reading because _______.
| A．reading helped her meet her friends |
| B．reading could broaden her horizons |
| C．she wanted to escape from the real world |
| D．she taught her grandchildren to read |
Who are most likely to be book lovers according to the author?
| A．The kids taught by intelligent teachers. |
| B．The kids forced to read by their serious parents. |
| C．The kids influenced by book lovers around them. |
| D．The kids curious about the outside world. |
We can infer form the passage that _______.
| A．other media are less important than books |
| B．the old woman’s friend was a bookseller |
| C．understanding is important in reading |
| D．the author once worked in a nursing home |
In which part of a newspaper would the passage be most likely to appear?
| A．Business | B．Lifestyle | C．Travel | D．History |
Many people rely on a cup of coffee or two to wake them up in the morning or pick them up during the working day, but now a chemist has come up with a speedy alternative to crafting a cup of coffee.
U.S. biochemist Ben Yu has created ‘Sprayable Energy,’ which claims to be the world’s first caffeine - based topical energy spray. He said tired workers can spray a ‘shot’ of caffeine onto their skin without experiencing a strong buzz, loading up on unnecessary calories or being stuck with a nasty aftertaste like they might get from drinking energy drinks or coffee.
The patent-pending caffeine spray is an odourless liquid that is absorbed through the skin and distributed through the body over a number of hours to deliver a caffeine hit that apparently lasts longer than guzzling a cup of coffee.
Each small aluminum bottle of Sprayable Energy contains around 160 sprays - the equivalent amount of caffeine to 40 cups of coffee and the creators say it is a much cheaper way of getting a caffeine fix than popping to a café. The only active ingredient in the spray is caffeine, which can naturally enter the human body through the skin by passing through cell membranes as it is very similar to nicotine in structure. Each spritz of Sprayable Energy contains around a quarter of the amount of caffeine found in a cup of coffee, but apparently has the same effect as a full cup.
The website said: ‘The reason for this is our product not being ingested, isn’t almost entirely metabolised（新陈代谢） by the liver before entering your system and becoming available to your body.’‘Thus, a smaller amount of caffeine can have just the same effect as a very large amount of caffeine ingested through an energy drink or cup of coffee. Sprayable Energy`s website recommends that users apply the spray in places where they normally spritz perfume, such as the neck or wrists, but warns users not to exceed 20 sprays a day.
It claims that after spraying the product on the skin, users will feel ‘awake and focused without being over-stimulated’, which is common with coffee and energy drinks.What can we learn about Sprayable Energy from the passage ?_______.
| A．A bottle of Sprayable Energyis cheaper than 40 cups of coffee. . |
| B．Sprayable Energy lets users not worry about taking in unnecessary calories.. |
| C．Sprayable Energy can be used at least 20 sprays a day |
| D．The caffeine spray is a colorless liquid that is absorbed through the skin.. |
What does the fifth paragraph mainly tell us ?____
A, Sprayable Energy is taken by mouth...
B. Before Sprayable Energy is absorbed by body, the liver entirely metabolizes it
C. How Sprayable Energy acts on user’s body and how users use the product.
D. Sprayable Energy is convenient but expensive.We can conclude from the passage that ____
| A．Sprayable Energy can not be permitted to be used by people now. |
| B．Sprayable Energy has not already gone into mass production |
| C．Each spritz of Sprayable Energy has the same effect as a full cup of coffee |
| D．Sprayable Energy is well received by flagging workers. |
The writer’s attitude towards Sprayable Energy ______
| A．negative. | B．positive |
| C．uncertain | D．indifferent |
Suppose you become a leader in an organization. It’s very likely that you’ll want to have volunteers to help with the organization’s activities. To do so, it should help to understand why people undertake volunteer work and what keeps their interest in the work.
Let’s begin with the question of why people volunteer. Researchers have identified several factors that motivate people to get involved. For example, people volunteer to express personal values related to unselfishness, to expand their range of experiences, and to strengthen social relationships. If volunteer positions do not meet these needs, people may not wish to participate. To select volunteers, you may need to understand the motivations of the people you wish to attract.
People also volunteer because they are required to do so. To increase levels of community service, some schools have launched compulsory volunteer programs. Unfortunately, these programs can shift people’s wish of participation from an internal factor (e.g., “I volunteer because it’s important to me”) to an external factor (e.g., “I volunteer because I’m required to do so”). When that happens, people become less likely to volunteer in the future. People must be sensitive to this possibility when they make volunteer activities a must.
Once people begin to volunteer, what leads them to remain in their positions over time? To answer this question, researchers have conducted follow-up studies in which they track volunteers over time. For instance, one study followed 238 volunteers in Florida over a year. One of the most important factors that influenced their satisfaction as volunteers was the amount of suffering they experienced in their volunteer positions. Although this result may not surprise you, it leads to important practical advice. The researchers note that attention should be given to “training methods that would prepare volunteers for troublesome situations or provide them with strategies for coping with the problem they do experience”.
Another study of 302 volunteers at hospitals in Chicago focused on individual differences in the degree to which people view “volunteer” as an important social role. It was assumed that those people for whom the role of volunteer was most part of their personal identity would also be most likely to continue volunteer work. Participants indicated the degree to which the social role mattered by responding to statements such as “Volunteering in Hospital is an important part of who I am.” Consistent with the researchers’ expectations, they found a positive correlation (正相关) between the strength of role identity and the length of time people continued to volunteer. These results, once again, lead to concrete advice: “Once an individual begins volunteering, continued efforts might focus on developing a volunteer role identity.... Items like T-shirts that allow volunteers to be recognized publicly for their contributions can help strengthen role identity”.People volunteer mainly out of ______ .
| A．academic requirements | B．social expectations |
| C．financial rewards | D．internal needs |
What can we learn from the Florida study? _______
| A．Follow-up studies should last for one year. |
| B．Volunteers should get mentally prepared. |
| C．Strategy training is a must in research. |
| D．Volunteers are provided with concrete advice. |
What is most likely to motivate volunteers to continue their work?_____
| A．Individual differences in role identity. |
| B．Publicly identifiable volunteer T-shirts. |
| C．Role identity as a volunteer. |
| D．Practical advice from researchers. |
What is the best title of the passage?______
| A．How to Get People to Volunteer |
| B．How to Study Volunteer Behaviors |
| C．How to Keep Volunteers’ Interest |
| D．How to Organize Volunteer Activities |