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[1]A program in the United States brings scientists and engineers into elementary schools to teach teachers more about how to teach science.
[2]Dave Weiss is a retired engineer. One day each week he volunteers at Georgian Forest Elementary School in Silver Spring, Maryland, near Washington. He, who is so enthusiastic and so much fun with the kids, works with teacher Fred Tenyke on science projects for ten years.
[3]Student Jada Lockwood says she enjoys Mr. Weiss' visits to her classroom. She likes the drawings he uses to explain scientific ideas.
[4]The American Association for the Advancement of Science sponsors the Senior Scientists and Engineers program. Dave Weiss has been a volunteer in that program for many years. The scientists and engineers help teachers in elementary schools improve their skills.
[5]Mr. Weiss says he and the other volunteers help teachers by providing hands-on knowledge. He notes that science is an area in which many elementary school teachers have _________experience. In elementary school, for the most part, a regular classroom teacher is responsible for teaching science, along with reading and math, and if they don't have a strong science background, just by nature, they're going to tend to underrepresent science in the curriculum.
[6]American fifteen-year-olds scored about average in science among countries that took part in testing by the OECD in 2009. The OECD is the Organization for Economic Cooperation and Development.
[7]Dave Weiss says he is concerned about such results, but hopeful for the future for American students learning science. Fred Tenkye thinks volunteers like Dave Weiss are helping students do that. "And if you can develop a passion for science, then eventually the grades and the test scores, then that will follow and increase, too." he said.How does Dave Weiss feel when he stays with students？(no more than 10 words)
________________________________________________________________________What do the students think of Dave Weiss’s teaching？(no more than 6 words)
________________________________________________________________________Fill in the blank in Paragraph 5 with proper words. (1 word)
________________________________________________________________________What should the students do when they are learning science? (no more than 10 words)
________________________________________________________________________What’s the main idea of this passage? (no more than 10 words)
_______________________________________________________________________
Special trees that grow faster, fight pollution, produce better wood, and even sense chemical attacks are being planted by scientists in the US．
When 40 per cent of Hawaii's US$14 million-a-year papaya （木瓜）industry was destroyed by a virus five years ago, work began on creating genetically engineered（转基因的）trees．
Researchers successfully introduced seeds that were designed to resist the virus．Since then, more and more people have been testing genetically engineered trees．Some researchers put special bacteria into trees to help them grow faster and produce better wood．Others are trying to create trees that can clean polluted soil．Meanwhile fruit farmers are looking for trees that are strong enough to resist worms, and paper companies want trees that produce more wood and therefore more paper．
The Pentagon （五角大楼） even gave the researchers US$500,000 this year after they developed a pine tree that changes its colours if it senses a chemical attack．So far, the poplar, eucalyptus （杨树与桉树）, apple and coffee trees are among those being engineered．All this can be done today because we have a better understanding of tree genomes （基因组）．
However, some people fear that the genetically engineered trees will cause dangerous results．They are worried that the new trees will breed with natural species and change the balance of the forest environment．
“It could be destructive,” said Jim Diamond, an environmentalist. “Trees are what is left of our natural environment and home to many endangered species.”
But researchers insist that science could give nature a fighting chance against both natural and man-made dangers．They hope to answer the critics by stopping the new trees from breeding, so their effect on the environment can be controlled．Which kind of tree is not the ones that scientists are planting in the US?
| A．Trees that worms can't hurt． |
| B．Genetically engineered trees． |
| C．Trees that can resist wind better． |
| D．Trees that can protect themselves at a chemical attack． |
What caused the American scientists to work on special trees?
| A．Tree genomes are mapped out so scientists know how to improve trees． |
| B．Great numbers of trees have been lost due to attacks by viruses． |
| C．Researchers successfully introduced seeds designed to resist the virus． |
| D．They think science could give nature a fighting chance against both natural and man-made dangers． |
Which of the following was probably the first kind of trees being engineered?
| A．Papaya． | B．Pine． | C．Apple． | D．Poplar． |
Why did critics think engineered trees dangerous? Because ________．
| A．these trees can destroy the balance of nature |
| B．everything except trees has been genetically engineered |
| C．trees are home to many endangered species |
| D．these trees may affect normal trees |
A device that stops drivers from falling asleep at the wheel is about to undergo(接受) testing at Department of Transport laboratories and could go on sale within 12 months.
The system, called driver Alert, aims to reduce deadly road accidents by 20%--40% that are caused by tiredness. Airline pilots can also use it to reduce the 30% of all pilot-error accidents that are related to fatigue（疲劳）.
Driver Alert is based on a computerized wristband. The device, worn by drivers or pilots gives out a sound about every four minutes during a car journey. After each sound the driver must respond by squeezing the steering wheel(方向盘). A sensor in the wristband detects this pressing action and measures the time between the sound and the driver’s response.
Tiredness is directly related to a driver’s response time. Usually, a watchful driver would take about 400 milliseconds to respond, but once that falls to more than 500 milliseconds, it suggests that the driver is getting sleepy.
In such cases the device gives out more regular and louder sounds, showing that the driver should open a window or stop for a rest. If the driver’s response continues to slow down, the sounds become more frequent until a nonstop alarm warns that the driver must stop as soon as possible.
The device has been delivered to the department’s laboratories for testing. If these tests, scheduled for six months’ time, are successful, the makers will bring the product to market within about a year.How should a driver respond to the sounds from Driver Alert?
| A．By sounding a warning. |
| B．By touching the wristband. |
| C．By checking the driving time. |
| D．By pressing the steering wheel. |
We can learn from the text that the driver needs to stop for a break when his response time is ________
| A．about 400 milliseconds | B．below 500 milliseconds |
| C．over 500 milliseconds | D．about 4 minutes |
When the driver gets sleepy while driving, Driver Alert ______.
| A．moves more regularly |
| B．stops working properly |
| C．opens the window for the driver |
| D．sounds more frequently and loudly |
According to the text, Driver Alert ______.
| A．aims to reduce tiredness-related accidents |
| B．has gone through testing at laboratories |
| C．aims to prevent drivers from sleeping |
| D．has been on sale for 12 months |
Sports can help you keep fit and get in touch with nature．However, whether you are on the mountains, in the waves, or on the grassland, you should be aware that your sport of choice might have great influence on the environment.
Some sports are resource-hungry．Golf, as you may know, eats up not only large areas of countryside, but also tons of water．Besides, all sorts of chemicals and huge amounts of energy are used to keep its courses (球场) in good condition．This causes major environmental effects．For example, in the dry regions of Portugal and Spain, golf is often held responsible for serious water shortage in some local areas．
There are many environment-friendly sports．Power walking is one of them that you could take up today．You don’t need any special equipment except a good pair of shoes; and you don’t have to worry about resources and your purse．Simple and free, power walking can also keep you fit．If you walk regularly, it will be good for your heart and bones．Experts say that 20 minutes of power walking daily can make you feel less anxious, sleep well and have better weight control.
Whatever sport you take up, you can make it greener by using environment-friendly equipment and buying products made from recycled materials．But the final goal should be “green gyms”．They are better replacements for traditional health clubs and modern sports centers．Members of green gyms play sports outdoors, in the countryside or other open spaces．There is no special requirement for you to start your membership．And best of all, it’s free.The author thinks the golf is resource-hungry because of the following EXCEPT that ________.
| A．Golf wastes large areas of countryside |
| B．Golf runs out of much water |
| C．Golf is bad for people’s health |
| D．Keeping golf court in good condition needs too much energy |
According to the passage, which of the following is an environment-friendly sport?
| A．hiking in the hills | B．swimming in the pool |
| C．playing basketball in the gym | D．motor racing in the desert |
The reason why the author uses power walking as an example mainly is that ________.
| A．it improves our health | B．it is an outdoor sport |
| C．it is recommended by experts | D．it uses fewer resources |
The passage is developed mainly by ________.
| A．examples and explanation | B．comparison and persuasion |
| C．facts and descriptions | D．figures and conclusion |
Honey from the African forest is not only a kind of natural sugar, it is also delicious. Most people, and many animals, like eating it. However, the only way for them to get that honey is to find a wild bees’ nest and take the honey from it. Often, these nests are high up in trees, and it is difficult to find them. In parts of Africa, though, people and animals looking for honey have a strange and unexpected helper — a little bird called a honey guide.
The honey guide does not actually like honey, but it does like the wax in the beehives (蜂房). The little bird cannot reach this wax(蜡), which is deep inside the bees’ nest. So, when it finds a suitable nest, it looks for someone to help it. The honey guide gives a loud cry that attracts the attention of both passing animals and people. Once it has their attention, it flies through the forest, waiting from time to time for the curious animal or person as it leads them to the nest. When they finally arrive at the nest, the follower reaches in to get at the delicious honey as the bird patiently waits and watches. Some of the honey, and the wax, always falls to the ground, and this is when the honey guide takes its share.
Scientists do not know why the honey guide likes eating the wax, but it is very determined in its efforts to get it. The birds seem to be able to smell wax from a long distance away. They will quickly arrive whenever a beekeeper is taking honey from his beehives, and will even enter churches when beeswax candles are being lighted.Why is it difficult to find a wild bees' nest?
| A．It's small in size. | B．It's buried in the soil. |
| C．It's covered with wax. | D．It's hidden in trees. |
What do the words "the follower" in Paragraph 2 refer to?
| A．A bee. | B．A bird. |
| C．A honey searcher. | D．A beekeeper. |
The honey guide is special in the way ________.
| A．it gets its food | B．it goes to church |
| C．it sings in the forest | D．it reaches into bees’ nests |
What can be the best title for the text?
| A．Wild Bees | B．Wax and Honey |
| C．Honey-Lover's Helper | D．Beekeeping in Africa |
One day, when I was working as a psychologist(心理学家) in England, a young boy showed up in my office. It was David. He kept walking up and down restlessly, his face pale, and his hands shaking slightly. His head teacher had introduced him to me before. “This boy has lost his family,” he wrote. “He is understandably very sad and refuses to talk to others, and I’m very worried about him. Can you help?”
I looked at David and showed him to a chair. How could I help him? There are problems which psychology doesn’t have the answer to, and which no words can describe. Sometimes the best thing one can do is to listen openly and silently. And I would do in this way.
The first two times we met, David didn’t say a word. He sat there, only looking up to look at the children’s drawings on the wall behind me. I suggested we play a game of chess. He nodded. After that he played chess with me every Wednesday afternoon—in complete silence and without looking at me. It’s not easy to cheat in chess, but I admit I made sure David won once or twice.
Usually, he arrived earlier than agreed, took the chess board and pieces from the shelf and began setting them up before I even got a chance to sit down. It seemed as if he enjoyed my company. But why did he never look at me?
“Perhaps he simply needs someone to share his pain with,” I thought. “Perhaps he senses that I respect his suffering.” Some months later, when we were playing chess, he looked up at me suddenly.
“It’s your turn,” he said.
After that day, David started talking. He got friends in school and joined a bicycle club. He wrote to me a few times, about his biking with some friends, and about his plan to get into university. Now he had really started to live his own life.
Maybe I gave David something. But I also learned that one—without any words—can reach out to another person. All it takes is a hug, a shoulder to cry on, a friendly touch, and an ear that listens.When he first met the author, David_________.
| A．felt a little excited | B．walked stubbornly |
| C．looked a little nervous | D．showed up with his teacher |
As a psychologist, the author __________.
| A．was uncertain about psychology | B．was ready to listen to David |
| C．was able to describe David’s problem | D．was sure of solving David’s problem |
David enjoyed being with the author because he____________.
| A．needed to share pain with the author |
| B．wanted to ask the author for advice |
| C．liked the children’s drawing in the office |
| D．beat the author many times in the chess game |
What can be inferred about David?
| A．He recovered after months of treatment. |
| B．He liked biking before he lost his family. |
| C．He went into university soon after starting to talk. |
| D．He got friends in school before he met the author. |
What made David change?
| A．His teacher’s help. |
| B．His exchange of letters with the author. |
| C．The author’s friendship. |
| D．The author’s silent communication with him. |