题目内容
Is it in this car ___ was bought last week ____ you went to Beijing yesterday?
A that; in which B which; that C that; which D which; which
B
Changsha,
Hunan Province
May 6, 2010
Dear editor,
Under China’s current educational system, there are those who do nothing but study. They of course are thought to be model students.
But I feel that there is another type of student who, perhaps not as diligent (勤奋的) as the first type, uses his time more efficiently and achieves a lot academically.
Last year, a classmate of mine was accepted by a top university. It surprised all of us. It was because, unlike most of us, he didn’t spend too much of his time studying.
When I asked him the secret of his success, he said that the key was properly and scientifically arranging his time.
“ I spent a lot of time keeping fit and as a result, I was able to better concentrate (集中) on my class work.”
The moral of the story is: it isn’t necessary to sit at your desk all day long to get high academic (学术) grades.
Yours,
Zhang Zishu
【小题1】What does the letter-writer (a reader) think leads to the fact that many students do nothing but study?
| A．The present educational system. | B． People’s old ideas. |
| C．The teaching methods. | D．The parents of these students. |
| A．the first type of student is our model |
| B．the second type of students is our model |
| C．both types of students are worth learning from |
| D．neither of the two types of students are good |
| A．properly and scientifically arranging his time |
| B．spending a lot of time studying |
| C．doing nothing but studying |
| D．playing all the time |
| A．call on us to work even harder |
| B．cause people to think about how to study more efficiently |
| C．advise people to do research into his classmate’s success |
| D．criticize (批评) China’s educational system |
| A．Secret of success. |
| B．China’s educational system needs changing. |
| C．Work while you work and play while you play. |
| D．Keep fit first. |
What will power your house in the future? Nuclear, wind, or solar power? According to scientists at the Massachusetts Institute of Technology (MIT) in the US, it might be leaves –but artificial ones.
Natural leaves are able to change sunlight and water into energy. It is known as photosynthesis (光合作用). Now researchers have found a way to imitate this seemingly simple process.
The artificial leaf developed by Daniel Nocera and his colleagues at MIT can be seen as a special silicon chip (硅片) with catalysts (催化剂). Similar to natural leaves, it can split water into hydrogen and oxygen when put into a bucket of water. The hydrogen and oxygen gases are then stored in a fuel cell (电池), which uses those two materials to produce electricity, located either on top of a house or beside the house.
Though the leaf is only about the shape of a poker card, scientists claimed that it is promising to be an inexpensive source of electricity in developing countries. “One can imagine villages in India and Africa not long from now purchasing an affordable basic power system based on this technology,” said Docera at a conference of the American Chemical Society.
An artificial leaf is not a new idea. The first artificial leaf was invented in 1997 but was too expensive and unstable for practical use. The new leaf, by contrast, is made of cheap materials, easy to use and highly stable. In laboratory studies, Nocera showed that an artificial leaf prorotype (原型) could operate continuously for at least 45 hours without a drop in activity.
The wonderful improvements come from Nocera’s recent discovery of several powerful new, inexpensive catalysts. These catalysts make the energy transformation (转换) inside the leaf more efficient with water and sunlight. Right now, the new leaf is about 10 times more efficient at carrying out photosynthesis than a natural one. Besides, the device can run in whatever water is available; that is, it doesn’t need pure water. This is important for some countries that don’t have access to pure water.
With the goal to “make each home its own power station” and “giving energy to the poor”, scientists believe that the new application could be widely used in developing countries, especially in India and rural China.
【小题1】Which of the following order correctly shows how the artificial leaf is used to produce electricity?
a. artificial leaves split water into hydrogen and oxygen
b. the hydrogen and oxygen gases are stored in a fuel cell
c. the artificial leaves are put in water
d. the fuel cell uses hydrogen and oxygen to produce electricity
| A．cbad | B．cabd | C．bcad | D．cadb |
| A．They are inexpensive but unstable. |
| B．They are as efficient at carrying out photosynthesis as natural leaves. |
| C．They can work only in pure water. |
| D．They need several catalysts to help them work efficiently. |
| A．build-up more power stations in the world |
| B．provide cheaper energy for developing countries |
| C．offer people in developing countries access to pure water |
| D．gain a deeper understanding of the photosynthesis process |
| A．Introduction to the history of artificial leaves. |
| B．An invention copying photosynthesis. |
| C．Giving energy to the poor. |
| D．A mixture of water power and solar energy. |
When thinking about quitting(停止) smoking…
List all the reasons why you want to quit. Every night before going to bed, repeat one of the reasons 10 times.
Decide positively that you want to quit. Try to avoid negative thoughts about how difficult it might be. Develop strong personal reasons as well as your health and responsibility to others. For example, think of all the time you waste taking cigarette breaks, rushing out to buy a pack, hunting a light, etc. Set a date for quitting --- perhaps a special day like your birthday, a holiday. If you smoke heavily at work, quit during your vacation. Make the date seriously, and don't let anything change it. Begin to condition yourself physically; start a modest (适当的) exercise; drink more water; get plenty of rest.
Immediately after quitting...
The first few days after you quit, spend as much free time as possible in places where smoking is prohibited, e.g. libraries, museums, theatres, department stores, etc.
Drink large quantities of water and fruit juice. Try to avoid wine, coffee, and other drinks which remind you of cigarette smoking.
Start a conversation with someone instead of a match for a cigarette.
If you miss the feeling of having a cigarette in your hand, play with something else - a pencil, a pen, a ruler. If you miss having something in your mouth, try a fake (仿制的) cigarette.
1.According to the passage, which of the following statements is true?
|
A．Whenever you feel like a cigarette, try to forget it by sleeping. |
|
B．Try to start a conversation before asking for a light. |
|
C．If you miss the feeling of having a cigarette in your mouth, play with a pen. |
|
D．Every night before going to bed, repeat all the reasons 10 times. |
2. From the passage, we know smokers __________.
|
A．should drink a lot of coffee |
B．have to stop to smoke from time to time |
|
C．should drink a lot of wine |
D．should not do any exercise |
3.According to the passage, what does the underlined word “prohibited” mean?
|
A．forbidden |
B．allowed |
C．received |
D．welcomed |
4. If the passage is in a newspaper, which section is it in?
|
A．Sports |
B．News |
C．Health |
D．Culture |