题目
题型:不详难度:来源:
The scientist’s knowledge must be exact. There’s no room for half right or right just half the time. He must be as nearly right as the conditions permit. What works under one set of conditions at one time must work under the same conditions at other times. If the conditions are different, any changes the scientist observes in a demonstration(实证) must be explained by the changes in the conditions. This is one reason why investigations are important in science. Albert Einstein, who developed the Theory of Relativity, arrived at the theory through mathematics. The accuracy(正确性) of his mathematics was later tested through investigation. Einstein’s ideas were proved to be correct. A scientist uses many tools for measurements. Then the measurements are used to make mathematical calculations(计算) that may test his investigations
小题1: What makes a scientist according to the passage?
A.The tools he uses. | B.His ways of learning |
C.The way he uses his tools | D.The various tools he uses |
The writer says this to show ___________.
A.the importance of information |
B.the difference between scientists and ordinary people. |
C.the importance of thinking |
D.the difference between carpenters and ordinary people |
A.works under one set of conditions at one time and also works under the same conditions at other times |
B.doesn’t allow any change even under different conditions |
C.Can be used many times under different conditions |
D.Can be used for many purposes |
A.Scientists are different from ordinary people. |
B.The Theory of Relativity. |
C.Exactness is the core (核心) of science. |
D.Exactness and way of using tools are the keys to making of a scientist. |
答案
解析
核心考点
试题【What makes a person a scientist? Does he have ways or tools of learning that are】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
In countries like the United States where meat is not as expensive, though, people choose to be vegetarians for reasons other than cost. Parental preferences(父母亲的偏爱), religious or other beliefs, and health problems are among the most common reasons for choosing to be a vegetarian. Many people choose a vegetarian diet out of concern over animal rights or the environment. And lots of people have more than one reason for choosing vegetarianism.
Different people follow different forms of vegetarianism. A true vegetarian eats no meat at all, including chicken and fish. A lactoovo(乳制品) vegetarian eats dairy products and eggs, but keeps out meat, fish, and chicken. It follows, then, that a lacto(乳,乳汁) vegetarian eats dairy products but not eggs, and an ovo (蛋,鸡蛋) vegetarian eats eggs but not dairy products.
A stricter form of vegetarianism is veganism. Not only are eggs and dairy products excluded (排除) from a vegan diet, so are animal products like honey. Some macrobiotic (养生的) diets fall into the vegan category. Macrobiotic diets limit not only animal products but also refined(经过提炼的) and processed foods, foods with preservatives, and foods that contain caffeine or other stimulants (刺激物).
Following a macrobiotic or vegan diet could lead to nutritional deficiencies (营养不足) in some people. Teens need to be sure their diets include enough nutrients to fuel growth, particularly protein and calcium (钙). If you’re interested in following a vegan or macrobiotic diet it’s a good idea to talk to a registered dietitian(营养学家). He or she can help you design meal plans that include enough nutrients.
小题1:The underlined sentence in the first paragraph probably means ______.
A.there is usually a note beside the meat in a meal |
B.meat often attracts people’s attention in a meal |
C.meat is served only a small amount in a meal |
D.meat should play an important part in a meal |
A.They are environmentally friendly. |
B.They are concerned about the rights of animals. |
C.They worry about their own health. |
D.They can’t afford to buy meat. |
A.neither animal products nor diary products |
B.diary products but no eggs |
C.animal products like honey |
D.processed food |
A.all the people should become vegetarians |
B.teens should be careful to be vegetarians |
C.vegetarianism is not a good thing for the world |
D.vegetarianism can make a country develop faster |
Using the telephone for business purpose is different. In any organization the person on the telephone represents the company and gives an impression of the firm to the outside world.
If you want to ensure good public relations, you need to master effective telephone techniques.
You should try to give an impression of an efficient, friendly, progressive company eager to give good service.
Before calling
Choose the right time. Consider the cost, urgency and convenience. When calling overseas, you need to consider the time difference.
Check the number. A great deal of money is wasted each year on dialing wrong numbers.
Plan your call. Make a list of points and questions to be raised.
Be prepared. Gather any files, papers or information that may be needed during the call. It is unprofessional to have to say “Hold on while I look for that.”
If you have to ask a caller to hold on, keep going back and assuring him/her that you will be as quick as possible.
Avoid interruptions. Call at a time when you are unlikely to be distracted(分心).
During the call
Be courteous, polite. Make time for suitable greetings like “How are you today, Jim?” and “Did you enjoy your holiday”?
Put a smile in your voice. Remember, your caller can not see you, so use intonation to good effect and try to sound confident, decisive, helpful, and interested.
Check your notes. Look back at your notes to ensure that you have covered everything and quote figures and other data correctly.
Get feedback. Make sure the caller understands the message correctly, especially deadlines and actions that are involved.
Be courteous. Finish by thanking the caller for his or her time and trouble.
After the call
Make notes. Let it become a habit to make notes of the call and place them in an appropriate file.
Take actions. If you need to send a letter of confirmation or inform someone in your organization about any details of the call, do it immediately so that you do not forget important points.
小题1: Before calling, you have to _____.
A.stay at your company only | B.learn important data and figures by heart |
C.get things ready for the communication | D.choose the right time and place |
A.be decisive | B.be heard in low spirits | C.check your notes | D.get feedback |
A.Polite. | B.Active. | C.Effective. | D.Correct. |
__4__, 10 percent unemployment really means 20 percent underemployment or anxious employment, all of which translates __5__ into late payments on mortgages, credit cards, auto and student loans, and loss of health insurance. It also means sleeplessness for tens of millions of Americans, and, of course, __6__ purchases.
Unemployment of this magnitude and duration also translates into ugly __7__, because fear and anxiety are __8__ grounds for the political resentment against immigrants, blacks, the poor, government leaders, business leaders, Jews and other easy _9__. It’s already started. Next year is a mid-term election. Be prepared for worse.
So why is unemployment and underemployment so high? And why is it _10__ to remain high for some time? Because, as noted, people who are worried about their jobs or have no jobs, and who are also trying to _11__ from under a pile of debt, are not going to do a lot of shopping. And businesses that don’t have customers aren’t going to do a lot of new _12__. And foreign nations also suffering high __13__ aren’t going to buy a lot of our goods and services. And without customers, companies won’t __14__. They’ll cut payrolls instead.
This brings us to the obvious question: Who’s going to buy the stuff we make or the services we provide, and therefore bring jobs back? There’s only one __15__ left: The government.
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A team of EU scientists said nitrogen emissions(氮排放) from cars, factories and farming were threatening biodiversity. It’s the second report this week warning of the on-going risks and threats linked to nitrogen pollution.
Nitrogen in the atmosphere is harmless in its inert(惰性的) state, but the report says reactive forms of nitrogen, largely produced by human activity, can be a menace to the natural world.
Emissions mostly come from vehicle exhausts(排气), factories, artificial fertilizers(肥料) and animal waste from intensive farming. The reactive nitrogen they emit to the air disrupts the environment in two ways: It can make acidic soils too acidic to support their previous mix of species. But primarily, because nitrogen is a fertilizer, it favors wild plants that can maximize the use of nitrogen to help them grow.
In effect, some of the nitrogen spread to fertilize crops is carried in the atmosphere to fertilize weeds, possibly a great distance from where the chemicals were first applied.
The effects of fertilization and acidification favor common aggressive species like grasses, brambles and nettles. They harm more delicate species like mosses(苔藓), and insect-eating sundew plants.
The report said 60% of wildlife sites were now receiving a critical load of reactive nitrogen. The report’s lead author, Dr Kevin Hicks from the University of York’s Stockholm Environment Institute (SEI), told BBC News that England’s Peak District had a definitely low range of species as a result of the reactive nitrogen that fell on the area.
“Nitrogen creates a rather big problem that seems to me to have been given too little attention,” he said. “Governments are responsible for protecting areas like this, but they are clearly failing.”
He said more research was needed to understand the knock-on effects for creatures from the changes in vegetation accidentally caused by emissions from cars, industry and farms.
At the conference, the representatives agreed “The Edinburgh Declaration on Reactive Nitrogen”. The document highlights the importance of reducing reactive nitrogen emissions to the environment, adding that the benefits of reducing nitrogen outweigh the costs of taking action.
小题1:The underlined word “menace” is used to express that the reactive nitrogen, largely produced by human activity can be ___________.
A.frightening | B.threatening | C.unique | D.unusual |
A.it’s harmless to have reactive nitrogen existing in the atmosphere |
B.reactive nitrogen emissions help aggressive species less than crops |
C.the harm to those delicate species has a negative impact on biodiversity |
D.reactive nitrogen can fertilize soils and keep their biodiversity |
A.no action was taken to stop nitrogen emission |
B.governments were willing to protect areas harmed by nitrogen |
C.“The Edinburgh Declaration on Reactive Nitrogen” was agreed |
D.nitrogen emissions were threatening wildlife sites’ biodiversity |
A.Keeping Away From Nitrogen Emissions | B.Stopping Nitrogen Emissions |
C.Air Pollution Damaging Europe’s Wildlife | D.Saving Europe’s Wildlife |
The DREAM Act is a/an 41 aid program for the young illegal immigrants who entered the U.S. before they were 16. Those who apply for this program can get 42 and temporary residing (居住) status, which can be changed, once 43 , to a green card after six years. These immigrants can then use their newly acquired status to seek green cards for their 44 . In this way, it can also provide citizenship for the illegal foreigners who brought their children to the US.
“I don’t live in fear of being driven out of this 45 ,” says Juan, a high school junior born in Mexico. “I live a normal life here 46 that now everyone is getting their driver’s license, and I can’t.”
Juan came to the U.S. with his mother and older brother at eight. He is hoping for the DREAM Act to be 47 . While he admits that there is no obvious prejudice in high school, Juan 48 faces unfair racial treatment.
“It 49 me when people joke around and ask me for my green card,” Juan explains. “I 50 , but deep down I know they are offending me for 51 I have no control over. I was born in Mexico, but my 52 is here.”
His brother now attends a community (社区) college and plans to enter a university. Juan hopes to take a 53 path. “For long, I have no 54 that I can go to university” Juan says. “I know it’s going to be hard, but as long as I stay in this country, I have a/an 55 .”
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