The storage of classified (分类的) research at all 24 labs run by the US Department of Energy was shut down this week after officials decided that the security (安全) problems recently found at the Los Alamos National Laboratory in New Mexico might also exist elsewhere.
Several computer disks went missing at Los Alamos earlier this month, forcing Energy Secretary Spencer Abraham to stop all work at the lab until the problems are found out. As of 26 July, two missing disks had still not been found, and 15 employees had been suspended in connection with the disappearance.
Now all energy labs will stop doing classified research that involves(需要) removable storage devices --- such as computer disks --- until all the devices are given explanation for and new procedures are in place for monitoring their handling by laboratory employees.
"While we have no evidence that the problems being investigated are present elsewhere, we have a responsibility to take all necessary action to prevent such problems, "Abraham said on 23 July.
The shut-down isn't quite as dramatic（惊人的）as it sounds, experts say. Only two labs will be seriously affected: Sandia National Laboratories in Albuquerque, New Mexico, and Lawrence Livermore National Laboratory in California. Together with Los Alamos, these two labs conduct the most part of the country's nuclear weapon programmes. At Livermore, 876 employees will be suspended during the storage of some 12,000 items of classified removable material.
At other labs, far fewer people will be affected. "The impact (影响) should be the smallest," says Martha Krebs, former director of the energy department's science office.Why was the storage of classified research at all 24 labs shut down?
| A．Because the security problems might be present elsewhere. |
| B．Because the security problems existed elsewhere. |
| C．Because two missing computer disks had still not be found. |
| D．Because officials decided to stop doing such research. |
How many labs conduct the country's nuclear weapon programmes according to the text?
| A．About 24. | B．Only 2. | C．More than 2. | D．Over 15. |
The underlined word "suspended"in the second paragraph probably means "______”.
| A．hung from above | B．stopped from holding a position | C．doubted | D．fired |
It can be inferred from the text that _____.
| A．the computer disks must have been stolen by terrorists |
| B．the people living in the United States have little security |
| C．the United States is a country whose security is very bad |
| D．the missing of the computer disks caused great fear among Americans |
Every day millions of letters go from one country to another. Letters mailed in Italy are received in Japan. Letters mailed in Canada are received in Africa. On the letters are many different kinds of stamps，bought in different countries．
The Universal Postal Union helps each letter get to the right place as quickly as possible. It sets up rules about the size and weight of letters，postcards，and small packages（包裹）. It has rules that all countries must follow about international postal rates（费用）．
One hundred years ago，international mail did not move so smoothly. One country did not always accept another country’s letters. Letters from some countries were too large to fit into the mailboxes of other countries. Letters travelled by many different routes（路线）．Some were lost along the way．
Sometimes the person who sent the letter could pay only part of the postage. The person receiving the letter had to pay the rest．
The United States was the first to suggest that all countries work together to settle the questions of international mail. In 1974，men from twenty-four countries met in Switzerland to form the Universal Postal Union．Today，more than 120 nations belong to this union. From its office in Switzerland，the union helps the mail to move safely and quickly around the world．From the story we can infer that ＿＿＿＿＿＿．
| A．mail is important to all countries |
| B．not enough letters are sent all over the world |
| C．all the letters must go to Switzerland first |
| D．all stamps look exactly the same |
The Universal Postal Union was formed ___________________ .
| A．to help move mail quickly around the world |
| B．to give many men a chance to work |
| C．to help men meet in Switzerland |
| D．to look for the lost letters along the way |
The underlined word “postage” in this passage means __________ .
| A．money paid when you buy a stamp |
| B．money spent on an envelope |
| C．the charge for carrying a letter by post |
| D．the pay a postman receives for his work |
This passage is mainly about ______________ .
| A．different kinds of stamps in different countries | B．an organization that makes rules |
| C．international mail | D．the size and weight of letters |
Hilton English Language Center
Information for New Students
CLASS TIME：8:30a.m.—10:00a.m.，10:30a.m.—12:00a.m.，1:30p.m.—3:00p.m..
The Language Center is open Monday to Friday. Each class has one afternoon free per week. On the first day, go to the lecture hall to check your timetable.
SELF—ACCESS：The language laboratory（Room 1110）is open Monday to Friday from 3:15p.m. to 5:00p.m. for all full-time students.
You can learn how to use computers for language games or word-processing（文字处理）. There are tapes for students to borrow to practice their English. Go in and ask the teacher to show you. If you plan to take public examinations, there are dictation and listening comprehension tapes for you to practice with. There are cloze exercises on the computers. Ask your class teacher for a list of past exam essays. Students can borrow tapes to take home but they must be returned after two days.
ATTENDANCE（出勤）: All students are expected to attend classes as it is required. Students who do not attend classes will be reported to OSS. Eighty percent attendance is required for students to receive their certificates（证书）when they finish their courses. It is also required by OSS for an extension to your visa.
BOOKS: If students are given course books, the books are their responsibility. If a book is lost, the student will be expected to pay for it.
If students wish to buy books, there is a bookshop in the college specializing in English books（Room 3520）.When do classes begin and end on a full day?
| A．8:30a.m.—1:30p.m.. | B．8:30a.m.—3:00p.m.. |
| C．8:30a.m.—3:15p.m.. | D．3:15p.m.—5:00p.m.. |
Which of the following statements is true?
| A．No teachers are in the language lab. |
| B．90% attendance is required for the students. |
| C．Books can’t be taken out of the center. |
| D．Students can prepare for exams by listening to tapes. |
Timetable can be seen in .
| A．the lecture hall | B．Room 3520 | C．the classroom | D．Room 1110 |
The books which the students wish to buy are in the .
| A．library | B．bookshop in the college | C．street | D．classroom |
Good afternoon, and welcome to England. We hope that your visit here will be a pleasant one. Today, I would like to draw your attention to a few of our laws.
The first one is about drinking. Now, you may not buy wine in this country if you are under 18 years of age, nor may your friends buy it for you.
Secondly, noise. Enjoy yourselves by all means, but please don't make unnecessary noise, especially at night. We ask you to respect other people who may wish to be quiet.
Thirdly, crossing the road. Be careful. The traffic moves on the left side of the road in this country. Use pedestrian crossings（人行道）and do not take any chances when crossing the road.
My next point is about rubbish. It isn't lawful to drop rubbish in the street. When you have something to throw away, please put it in your pocket and take it home, or put it in a dustbin.
Finally, as regards（至于）smoking, it is against the law to buy cigarettes or tobacco if you are under 16 years of age.
I'd like to finish by saying that if you require any sort of help or assistance（帮助）, you should contact the police, who will be pleased to help you. You can call, write or directly go to ask any policeman.Who do you think is most likely to make the speech?
| A．A guide（向导） | B．A person who makes laws |
| C．A teacher | D．An English officer |
How many laws are there discussed in the speech?
| A．Four | B．Three | C．Six | D．Five |
The main purpose of this speech is to __________.
| A．tell people that those above 18 can drink and smoke there |
| B．declare the different laws of England |
| C．give advice to travelers to the country |
| D．warn people against going to the country |
The underlined word "contact" in the last paragraph means to __________.
| A．keep in touch with（联系） | B．turn to | C．make a call to | D．write to |
Sometimes, the simplest ideas are the best. For example, to absorb heat from the sun to heat water, you need large, flat, black surfaces. One way to do that is to build those surfaces specially, on the roofs of buildings. But why go to all that trouble when cities are rub of black surfaces already, in the form of asphalt （柏油） roads?
Ten years ago, this thought came into the mind of Arian de Bondt, a Dutch engineer. He finally persuaded his boss to follow it up. The result is that their building is now heated in winter and cooled in summer by a system that relies on the surface of the road outside.
The heat-collector is a system of connected water pipes. Most of them ran from one side of the street to the other, just under the asphalt road. Some, however, dive deep into the ground.
When the street surface gets hot in summer, water pumped through the pipes picks up this heat and takes it underground through one of the diving pipes. At a depth of 100 metres lies a natural aquifer （蓄水层） into which several heat exchangers （交换器） have been built. The hot water from the street runs through these exchangers, warning the ground-water, before returning to the surface through another pipe. The aquifer is thus used as a heat store.
In winter, the working system is changed slightly. Water is pumped through the heat exchangers to pick up the heat stored during summer. This water goes into the building and is used to warm the place up. After performing that task, it is pumped under the asphalt and its remaining heat keeps the road free of snow and ice. Which of the following is true according to the first two paragraphs?
| A．Arian de Bondt got his idea from his boss. |
| B．Large, flat, black surfaces need to be built in cities. |
| C．The Dutch engineer's system has been widely used. |
| D．Heat can also be collected from asphalt roads. |
For what purpose are the diving pipes used?
| A．To absorb heat from the sun. |
| B．To store heat for future use. |
| C．To turn solar energy into heat energy. |
| D．To carry heat down below the surface. |
From the last paragraph we can learn that __
A. some pipes have to be re-arranged in winter
B. the system can do more than warming up the building
C. the exchangers will pick up heat from the street surface
Section One
The city is an accumulation (积累)of human civilization. Just as the American social philosopher (哲学家) Lewis Mumford put it, it is a special system which, fine and compact（简洁的）, has been designed to preserve the fruits of human civilization. Many Western languages have developed their versions of the term “civilization” from the same Latin (拉丁语的) word “civitas”(meaning “city”), and it is by no means a coincidence（巧合）. The city has played a significant role in the perfection of order in human society.
Section Two
The emblem, showing the image of three people ― you, me, him/her holding hands together, symbolizes the big family of mankind. Inspired by the shape of the Chinese character “世” (meaning the world), the design conveys the organizers' wish to host an Expo which is of global scale and which displays the various urban cultures of the world.
Section Three
Created from the inspiration of Chinese character “人”, the design roots deeply in Chinese culture. It tells the world the eternal core (永恒的核心) and theme of Shanghai World Expo will be always human. The mascot “Haibao” will become the messenger for the theme of World Expo 2010 Shanghai China “Better City, Better Life”.
The basic structure of the Chinese character “人” in which each stroke(一笔，一划) supports each other also shows the concept that the beautiful life should depends on mutual-help. If the human are willing to support one another, the harmony among human, nature, and society will be available. Such an urban life will be nice.
Haibao’s confident smile is expressing his sincere greeting from China ― “World Expo 2010 Shanghai China welcomes you!”Section One mainly tells us about ______.
| A．the part cities play in human civilization | B．the development of the word “city” |
| C．why the Expo is held in Shanghai | D．where human civilization originated |
The underlined word “it” in Section One refers to ______.
| A．the civilization | B．the philosopher | C．the word | D．the city |
Which correctly matches the sections with the pictures described in the passage?
| Pictures |
 |
 |
 |
|||||
|