題目列表(包括答案和解析)
A four-year study of 200 college students found that those who drink heavily and started drinking at an early age demonstrate poor decision-making skills, just like long-term, chronic(長期的) alcoholics. Researchers at the University of Missouri-Columbia believe early onset binge drinking negatively affects psychological development.
The researches examined college students between the ages of 18 and 22. After three years, they tested them using the Iowa Gambling Test, which measures the tendency to make immediate (disadvantageous) or long-term (advantageous) choices.
Based on the students’ reported drinking habits, they were grouped into four categories: low binge drinkers, moderate binge drinkers, increasing binge drinkers and stable or high binge drinkers.
“Students in the stable or high alcohol use category, who had longer histories of binge drinking, made riskier and less advantageous choices, which reflect problems associated with planning for the future,” the researchers reported.
The study also found that only students who started binge drinking when they were younger showed impairment on the task.
“There is reason to think that heavy binge drinking during adolescence, when the brain is still rapidly developing, may have some negative legacy (遺傳) on psychological development,” said Kenneth J. Sher of MU’s Midwest Alcoholism Research Center in a news release. “The interesting thing is that if we were to just look at binge drinkers and how impaired they are in the decision-making process as juniors, we’d really be obscuring(使模糊) the important issue, which is how long they’ve been binge drinkers and / or how early they started.”
1.What does the passage mainly tell us?
A．Four categories of heavy drinkers.
B．Heavy drinking affects college students.
C．Early onset binge drinkers are poor at decision-making.
D．People drinking at an early age will develop into binge drinkers.
2.Which category would make the most disadvantageous choice?
A．Low binge drinkers B．moderate binge drinkers
C．Increasing binge drinkers D．Stable binge drinkers
3.Early onset binge drinking negatively affects psychological development because _______.
A．adolescent students were not suitable for drinking
B．drinking too much will slow the growth of the brain
C．the brain has not fully developed during adolescence
D．drinking will make the students make dangerous choices
4.What Kenneth J. Sher says suggests that _______.
A．he is quite clear about what the important issue is
B．if binger drinkers started late, there would be no bad effect
C．the important issue is how impaired the students are in decision-making
D．only early binge drinkers will have their decision-making ability affected
Batteries can power anything from small sensors to large systems．While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves．University of Missouri（MU） researchers are developing a nuclear energy source that is smaller, lighter and more efficient．
“To provide enough power, we need certain methods with high energy density（密度）”，said Jae Kwon, assistant professor of electrical and computer engineering at MU．“The radioisotope（放射性同位素） battery can provide power density that is much higher than chemical batteries．”
Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems （M/NEMS）．Although nuclear batteries can cause concerns, Kwon said they are safe．
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems．”
His new idea is not only in the battery’s size, but also in its semiconductor（半導體）．Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor．
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure（晶體結構） of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem．”
Together with J．David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery．In the future, they hope to increase the battery’s power, shrink its size and try with various other materials．Kwon said that battery could be thinner than the thickness of human hair．
【小題1】Jae Kwon gave examples in Paragraph 4_________．
| A．to show chemical batteries are widely applied． |
| B．to introduce nuclear batteries can be safely used． |
| C．to describe a nuclear-powered system． |
| D．to introduce various energy sources． |
| A．uses a solid semiconductor | B．will soon replace the present ones． |
| C．could be extremely thin | D．has passed the final test． |
| A．science news report | B．book review |
| C．newspaper ad | D．science fiction |
I got tired of living the life that everybody told me I “should” be living , so one day I decided to start living life on my own terms. Frustrated（挫敗）with my job, I came home, put on my shoes, and just started running. It felt so good to be free. That first day I ended up running 30 miles without stopping. Yes, I had rediscovered my old passion ( 酷愛的事物) — and it felt so good I set a goal to support myself and my family from my running alone.
I trained hard every day. Since I wanted to be the best I could be, I knew I would have to set some clear goals for myself. A couple of my goals were: run a 135-mile ultra-marathon(超級馬拉松) across Death Valley, win the Badwater Ultra-Marathon, and run a marathon to the South Pole.
I had no idea how I was going to achieve these goals, but they certainly encouraged me to work hard. Today, I am really grateful to say that I have achieved all of them. Shortly after completing these goals, I set another goal: to run fifty marathons, in fifty states, in fifty days. Nobody had done anything like this before. To be honest, I was not quite sure if I could. But there was only one way to find out…so I just started training and preparing to give it my best try.
I completed that goal one year ago, and it felt great! But for me, life is not all about achieving goals. Sure, it feels good to succeed, but the greatest reward for me was learning more about myself and what I was able to do.
Only by stepping out into the unknown and stretching(使傾注全力) ourselves can we really discover what our true potential(潛能) is。
【小題1】Why did the author decide to become a runner?
| A．He was out of work. |
| B．He wanted to treat his illness. |
| C．He wanted to live his dreams. |
| D．He suddenly found running interesting. |
| A．Setting goals | B．Learning from others. |
| C．Being honest | D．Keeping on reading . |
| A．very grateful | B．not quite confident |
| C．quite afraid | D．not very satisfied |
| A．Win the Badwater Ultra-Marathon. |
| B．Run a marathon to the South Pole. |
| C．Run fifty marathons, in fifty states, in fifty days. |
| D．Run a 135-mile ultra-marathon across Death Valley. |
| A．life means achieving goals |
| B．success is the greatest reward |
| C．sports help develop our potential |
| D．everyone may have great potential. |
A four-year study of 200 college students found that those who drink heavily and started drinking at an early age demonstrate poor decision-making skills, just like long-term, chronic(長期的) alcoholics. Researchers at the University of Missouri-Columbia believe early onset binge drinking negatively affects psychological development.
The researches examined college students between the ages of 18 and 22. After three years, they tested them using the Iowa Gambling Test, which measures the tendency to make immediate (disadvantageous) or long-term (advantageous) choices.
Based on the students’ reported drinking habits, they were grouped into four categories: low binge drinkers, moderate binge drinkers, increasing binge drinkers and stable or high binge drinkers.
“Students in the stable or high alcohol use category, who had longer histories of binge drinking, made riskier and less advantageous choices, which reflect problems associated with planning for the future,” the researchers reported.
The study also found that only students who started binge drinking when they were younger showed impairment on the task.
“There is reason to think that heavy binge drinking during adolescence, when the brain is still rapidly developing, may have some negative legacy (遺傳) on psychological development,” said Kenneth J. Sher of MU’s Midwest Alcoholism Research Center in a news release. “The interesting thing is that if we were to just look at binge drinkers and how impaired they are in the decision-making process as juniors, we’d really be obscuring(使模糊) the important issue, which is how long they’ve been binge drinkers and / or how early they started.”
【小題1】What does the passage mainly tell us?
| A．Four categories of heavy drinkers. |
| B．Heavy drinking affects college students. |
| C．Early onset binge drinkers are poor at decision-making. |
| D．People drinking at an early age will develop into binge drinkers. |
| A．Low binge drinkers | B．moderate binge drinkers |
| C．Increasing binge drinkers | D．Stable binge drinkers |
| A．adolescent students were not suitable for drinking |
| B．drinking too much will slow the growth of the brain |
| C．the brain has not fully developed during adolescence |
| D．drinking will make the students make dangerous choices |
| A．he is quite clear about what the important issue is |
| B．if binger drinkers started late, there would be no bad effect |
| C．the important issue is how impaired the students are in decision-making |
| D．only early binge drinkers will have their decision-making ability affected |
The World Trade Organization (WTO), founded on January 1, 1995, aims to encourage international trade to flow as possible, making sure that trade agreements are respected and that any disputes can be settled.
In the five years since its founding, the WTO has become well known as one of the world’s most powerful economic organizations, taking its place alongside the World Bank and International Money Fund.
The system of global rules for international trade, however, dates back half a century to 1948 when the General Agreement on Tariffs and Trade was formed after World War II.
As time went by, it became clear that the GATT had two major drawbacks-the limited areas of trade it covered, and the lack of an effective system to settle disputes.
After seven years of trade talks ending in 1994, the so-called Uruguay Round finally give birth to the WTO, complete with an effective system to settle disputes and new rules covering trade in services and intellectual property.
Even after seven years of talks and 22, 500 pages of agreements, there were still problems, especially the difficulty to deal with areas of agriculture and services, which the member nations agreed to revise in 2000. The WTO, with its head office in Geneva, has 135 members with 30 more waiting to join.
From the passage we know that the GATT stopped working ________.
A. soon after World War II ended
B. a little more than 50 years after World War II
C. just in the year 1994
D. seven years before the Uruguay Round talk
Compared with the GATT, the WTO _______.
A. didn’t pay enough attention to services and intellectual property
B. got its members to sign the agreements more easily
C. has got to many areas of international trade to deal with to work effectively
D. can do better to settle disputes in more areas of international trade
In the new century the WTO will ________.
A. take the place of the World Bank and International Monetary Fund
B. have more members and settle more problems
C. make complete new rules in every area of international trade
D. have new rules covering trade in services and intellectual property
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