题目内容
Listening to the music always makes me .
A.relaxed; relaxing B.relaxed; relaxed C.relaxing; relaxed
It Is Never Too Early to Think—and Communicate—like a Scientist
Who is a scientist and what is his job? A chemist doing experiments? A geologist out studying rocks? When most people think about science, they imagine characters making discoveries or finding cures （治疗方法）for new diseases. However, these leave out an extremely important part of the scientific process: communicating—sharing the results of that work.
Imagine if someone discovered something important about a disease. Other scientists need to understand the work well enough to use these new developments to make even more discoveries in the future. The public, too, needs to understand how these discoveries might influence their lives. But none of this will be possible if the work is not shared. Being a scientist goes far beyond the moment of discovery.
Without clear communication, scientists would not be able to use the work that has already been done. So how do scientists tell others about the work that they have done? How do they make sure that everything that they share is as clear and correct as possible?
Researchers publish their work in scientific journals（期刊）.These journals can be read by other researchers around the world. It is very important for these journals, and for the scientists who read them, to make sure that the research included is as correct as possible. In order to do that, articles given to scientific journals before publication first go through a process called peer review. Other scientists who do research in areas related to the work in an article are asked to read through it. Scientists also provide feedback to the writers. They bring up new questions the writer may not have considered, recognize limitations to the results being described, and also make sure that no mistakes were made during the process.
Frontiers for Young Minds is a scientific journal written for—and reviewed by young people. All of the articles in it are based on works already published in a peer reviewed scientific journal. However, while scientists are good at making sure that articles are understandable for other scientists, there are no better experts to make sure that something can be understood by young people than the young people themselves. By working together with an experts young reviewers read the article to see if any part of the article is hard to understands make it clear why the experiment was done in the way it was done and check whether the figures （数据）clearly explain the point of the article.
Basically, these young reviewers learn to think like scientists. It is never too early to start! Ask questions, learn new things, and don't forget the importance of communicating your findings.
1.What is Paragraph 2 mainly about?
A.What is required to be a good scientist.
B.Who should understand a scientist’s job.
C.Why sharing the results of scientific work is important.
D.How scientists make sure their work is clear and correct.
2.From the passage we can know that________.
A.scientists are good at working together with others
B.young people usually enjoy reading scientific journals
C.in peer review, other scientists bring up questions to readers
D.young reviewers help make articles in Frontiers for Young Minds more readable
3.What is the writer's main purpose in writing this passage?
A.To introduce how scientists do their jobs.
B.To offer practical advice on how to ask scientific questions.
C.To explain the effects of peer review on scientific journals.
D.To encourage young people to think and communicate like scientists.
What time does the boy start to go to school every day?
A.At 7:15. B.At 7:20. C.At 7:50.
________hard-working and brave Chinese people!
A.What B.What a C.How
— ________late for school again, Tom!
— Sorry, I________.
A.Don’t; will B.Don’t be; won’t C.Don’t; won’t
Psychologists(心理学家) are interested in the reasons why some people like taking part in risky sports.
When they studied people who were learning to jump from a plane with a parachute, they found that the parachutists’ bodies produced large amounts of two hormones(激素), adrenaline(肾上腺素) and noradrenaline(去甲肾上腺素), just before they made their jump. These hormones help to prepare us for any sudden activity. Adrenaline increases the heart beat and provides more sugar for the muscles(肌肉), while noradrenaline makes us react(反应) more quickly. However, noradrenaline also supplies energy to a part of the brain which controls feelings of pleasure. A feeling of pleasure caused by this hormone makes certain people want to take part in dangerous sports.
Another possible reason is the level of excitement in part of the brain. According to some psychologists, the brain tries to manage a certain level of excitement. They believe that people who have a low level of excitement look for new experiences in order to fire themselves with excitement, but people who usually have a high level of excitement try to avoid risks in order not to become overexcited. If the psychologists are right, people with a low excitement level are the ones who enjoy taking part in dangerous sports and activities.
It is thought that people with low levels of excitement have a slower-reacting nervous system than people with higher levels. So it may be possible to find out your level of excitement by testing your nervous system. A quick way of doing this is to put some lemon juice on your tongue(舌头). If you produce a lot of saliva(唾液), your nervous system has been affected(影响) by the lemon and so you probably have a high level of excitement; if you produce little saliva, you probably have a low excitement level. If you have a low level, you might enjoy taking part in risky sports. However, this does not mean that you have to try parachuting!
1.Did the parachutists’ bodies produce large amounts of adrenaline and noradrenaline before they made their jump?
_________________________
2.What does adrenaline increase and provide?
3.Why do people with a high level of excitement try to avoid risks?
4.How can people find out their level of excitement?
5.Who may enjoy taking part in risky activities?
Look at the flowers on both sides of the street. They ________ last month.
A.plant B.planted C.are planted D.were planted
I used to listen to Pop music.(改为否定句)
I ____ ____ to listen to Pop music.
Can we give a hand to those endangered animals? Yes, we may only do a little bit, but together our small actions add up to a lot.
1 Protect wildlife habitat (栖息地).
Perhaps the greatest threat that faces many species (物种) is the widespread destruction (破坏) of habitat. Cutting down forests, farming, and development all result in loss of wildlife habitat. In areas where rare (稀有的) species live, habitat destruction can quickly force a species to extinction (灭绝). By protecting habitat, entire communities of animals can be protected together naturally.
2Reduce the threat (威胁) of invasive (入侵的) species.
The spread of non-native species has greatly reduced native populations around the world. Invasive species compete with native species for resources (资源) and habitat. They can even prey (捕食) on native species directly, forcing native species towards extinction.
3 Place decals (贴花纸) on windows.
It is reported that as many as one billion birds in the United States die each year because of collisions (碰撞) with windows. You can help reduce the number of collisions simply by placing decals on the windows in your home and office.
4 Slow down when driving.
Many native animals have to live in developed areas and this means they must move in human-living areas. One of the biggest obstacles (障碍) to them is that created by roads. Roads divide habitat and present a constant (不断的) risk to any animal attempting to cross from one side to the other. So when you’re out and about, slow down and keep an eye out for wildlife.
1.Is the greatest threat that endangered animals faces created by roads?
__________________________________________________________________________
2.How many ways to protect the endangered animals is mentioned in the passage?
3.Why are people advised to put decals on windows?
____________________________________________________________________________________________________________________________________________________
4.Do you think it necessary for people to protect the endangered animals? Why or why not? ____________________________________________________________________________________________________________________________________________________
