题目内容
（请给出正确答案）
A. feel
B. fail
C. fall
D. fill
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更多“Scientists could see many thin…”相关的问题
A、that they could obtain funding easily
B、that they could see the advantages of continuing the research
C、that they could gain both fame and wealth from doing the research
D、that they could become the pioneers in this field
Why did the scientists at the University of California make the experiment？
A．To help children in hospital recover from their illness.
B．To look for the evidence of laughter's power in women patients.
C．To test the effect of laughter on children who were seriously ill.
D．To see whether laughter could replace some active exercises.
What will the future study in this respect be like according to Doctor David Ho？
A．More patients will be studied to see if the observation of the study could be confirmed
B．The scientists will not be so careful or cautious in carrying out such research.
C．All the studies will reach 50 or 100 patients before we know more about this particular technique.
D．The scientists will experiment on other particular techniques other than the one used in this study.
Now satellites are helping to forecast(预报) the weather. From space,they can see any part of the earth. These satellites take pictures of the atmosphere (大气), because this is where the weather forms. These pictures are sent to weather stations on earth. Meteorologists (气象学家)can see the weather of any part of the world. From the pictures, the scientists can often see how the weather will change.
Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare them with earlier ones. Perhaps they may find that the clouds have changed during the last few hours. This may mean that the weather on the ground may soon change, too. In their next weather forecast, the meteorologists can report this.
So weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon,perhaps,they may be able to forecast the weather for a week or more ahead.
Satellites travel__________
A.in space
B.in the atmosphere
C.above the ground
D.above space
They could see there was something wrong with both watches. They observed them for several hours before speaking to each other. They both silently found that the German watch was losing 60 minutes and the Japanese are doubled that.
The scientist with the Japanese watch then slowly raised his head and said," Both watch are out of work, but my watch is right more often than yours, so it's better. "The scientist German watch went home without saying a word.
The two scientists were quarrelling at the beginning of the story, because __________.
A．the Japanese watch was better
B．the German watch was better
C．each of them thought his own watch was better than the other's
D．both the watches were wrong
They could see there was something wrong with both watches. They observed them for several hours before speaking to each other. They both silently found that the German watch was losing 60 minutes and the Japanese are doubled that.
The scientist with the Japanese watch then slowly raised his head and said, "Both watch are out of work, but my watch is right more often than yours, so it's better." The scientist with the German watch went home without saying a word.
The two scientists were quarrelling at the beginning of the story, because ______.
A．the Japanese watch was better
B．the German watch was better
C．each of them thought his own watch was better than the other's
D．both the watches were wrong
Reading Comprehension(阅读理解) Passage 4 Look closely at your hands. Are they clean？ It doesn't matter how many times you wash your hands, tiny microbes (微生物) still stay on them. But don't worry. Most microbes don't harm you. Now scientists say the microbes on our hands could be used in a surprising way; fighting crime, According to a recent survey microbes as well as fingerprints(指纹) could be used to identify the criminal. Everyone has his own set of microbes on the hands. That is to say, if you and your best friend were able to see and compare all the microbes on your hands, your hands probably would look different. Some microbes only show up on your hands while others live only on your friend's hands. When you work on a computer you leave the microbes from your hands on the keyboard. The scientists can easily tell the owner of the keyboard by looking at the microbes on it. Even if you don't leave your fingerprints behind, your microbes may give you away. Noah Fierer, a scientist, says. "You can only clean a fingerprint, but you can't sterilize (使无菌) a surface just by wiping(擦) it off," He says that scientists have a lot more work to do before the microbe is used as a useful tool. 根据短文完成1-5题，在空格处填写正确选项的字母。 1. According to the passage,_______ could be used to identify the criminal. A. fingerprints B. scientists' hands C. microbes D. fingerprints and microbes on people's hands
Task 2
Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45.
When animals make long journeys across places where there is no food or shelter, such as deserts or oceans, it is very important that they should be able to find their way accurately.
Birds find their way by the stars at night and by the sun during the day. People thought that this was impossible. Then some scientists made an experiment. They put some migrating birds(候鸟)in cages inside a planetarium(天象图). When the operator turned the artificial sky(人造天空)round, the birds began to fly to the sides of the cage. Every time he moved it, the birds moved to a new position. Scientists discovered that they always flew toward the direction in which they would have flown if the sky had been real. This proved that they could see the stars and respond to them.
Many animals, especially birds, have a very precise sense of time, which is called their “internal clock”. In cloudy weather, birds delay setting off on long journeys, but if the cloud lasts for a long time, they must go at last, to complete their migration in time. In such conditions, they are able to steer(引导)by following the magnetic field(磁场)of the earth. We could say that they have their own special compass inside them, which tells the right direction to go.
Most migrating animals travel in groups, sometimes in very large numbers. This makes it more likely that they will find the right way, especially when the group has experienced animals which have made the journey before.
What was proved by the experiment mentioned in the passage？
A．Birds find their way by the stars at night and by the sun during the day.
B．Birds can tell the differences between real sky and artificial sky.
C．Birds can see the stars and would move when the stars change position.
D．Birds always fly to the sides of the cage.
根据以下材料，回答题
The Book of Life
So far， scientists have named about 1.8 million living species （物种）， and that"s just a small part of what probably exists on Earth. With so many plants， animals， and other creatures covering the planet， it can be tough to figure out what type of spider is moving up your leg or what kind of bird is flying by.
A soon-to-be-launched Web site might help. An international team of researchers has announced the creation of a Web-based Encyclopedia （百科全书） of Life （EoL）. The project aims to catalog every species on Earth in a single， easy-to-use reference guide.
To get the encyclopedia started， the creators will use information from scientific databases （数据库） that already exist. And eventually， in special sections of the site， nonscientists with specialized（专门的 ）knowledge will get to join in. Bird-watchers， for example， will be able to input which birds they"ve seen and where. The technology for this kind of tool has only recently become available.
As the EoL develops， you might find it useful for school projects. The site will feature special pages for kids who are studying ecosystems （生态系统） in their neighborhoods. To make sure the encyclopedia is accurate， scientists will review much of the information added to it. People who visit the site will be able to choose to leave out pages that haven"t been reviewed.
Another convenient feature of the EoL is that you"ll be able to pick the level of detail you see to match your interests， age， and current knowledge. If you wanted to learn about bears for a science class report， for example， you could use the "novice" setting to get basic information about the animals. On the "expert" setting， on the other hand， you could get much more detailed information about the history， literature， and exploration of bears.
It now takes years for scientists to collect all the data they need to describe and analyze species. The creators of the Encyclopedia of Life hope that their new tool will speed that process.
"Spider" and "bird" mentioned in Paragraph 1 are examples to illustrate __________. 查看材料
A.animals are people"s friends
B.there are numerous living species on Earth
C.it is easy to see spiders and birds
D.there are many types of spiders and birds
In the special containers plants can develop rapidly in a short period of time. Astronauts would need only to watch the computers to see if the plants are getting what they need.
The scientists at the Kennedy Space Center laboratory have been able to produce small kinds of wheat, soybeans, lettuce, and white potatoes. Universities around the country are testing other small size crops, such as carrot, tomatoes and rice in special growing containers.
Scientists also are attempting to genetically design some of these plants to contain high levels of proteins. They are studying ways to use parts of the plants that can not be eaten and they will also try to find ways of using human wastes to fertilize the -plants. Scientists at the Johnson space Center in Houston, Texas, are trying to grow crops in a mixture of volcanic dirt and crashed glass. The matter is similar to soil found on the moon. Lettuce and wheat have grown well in the mixture. Space Agency scientists hope to test some version of the experimental gardens on the planned space station. But the special growing containers are expected to be used mostly for long distance space travel. A trip to Mars, for example, is expected to take about one year. When the astronauts reach Mars, they could try to use the soil there to grow other crops.
Which of the following statements is NOT true？
A．Scientists at the Kennedy Space Center are attempting to grow vegetables that could survive.
B．In the special containers plants can develop rapidly in a short period of time.
C．Scientists are also attempting to genetically design some of these plants to contain high levels of protein.
D．Space agency scientists hope to test some version of the experimental gardens on the planned space station.
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