[单项选择]Subways are underground systems of high speed trains, which are mostly found in large cit ies: New York, London, and Tokyo.
A. 地铁是地下的高速火车系统，主要出现在像纽约、伦敦和东京这样的大城市。
B. 地铁是地下的火车系统，主要出现在像纽约、伦敦和东京这样的大城市。
C. 地铁是地下的高速火车系统，主要出现在像纽约、伦敦和北京这样的大城市。
D. 地铁是在地下的高速运行的火车，主要出现在像纽约、伦敦和东京这样的大城市。

[单项选择]Subways are underground systems of high speed trains, which are mostly found in large cit ies: New York, London, and Tokyo.
A.地铁是地下的高速火车系统，主要出现在像纽约、伦敦和东京这样的大城市。
B.地铁是地下的火车系统，主要出现在像纽约、伦敦和东京这样的大城市。
C.地铁是地下的高速火车系统，主要出现在像纽约、伦敦和北京这样的大城市。
D.地铁是在地下的高速运行的火车，主要出现在像纽约、伦敦和东京这样的大城市。

[单项选择]

Subways are underground trains, which usually operate 24 hours a day. They are found in larger cities and usually run between the suburbs and the downtown area. Maps and schedules are available from the ticket office. If you take the subway often, you can save money by purchasing a monthly pass (月票).
City-operated buses run on various routes (线路)and are designed to be at certain places at certain times. Maps and schedules may be posted at certain stops, or they may be available at local banks, libraries, the student union, or from the bus drivers. Buses run mainly during the day. Fare is paid by exact change in coins, or by monthly passes.
Taxis are generally more expensive in the United States than in other countries. If you use a taxi, be sure you ask the amount of the fare before you agree to ride. The driver usually expects a tip(小费)of 15 percent of the fare.

According.to the passage, subways are underground trains, which usually run（）
A. within downtown areas
B. away from city centers
C. in or outside big modern cities
D. between suburbs and city centers

[多项选择]High-speed rail (HSR) develops at a high speed in China. Many people, however, prefer slow trains to HSR because of the high ticket price of the latter. In many cases, even airfare is not much higher than HSR fares. As the construction of HSR is still gathering momentum in China, where do you think lies its competitiveness

[简答题]High-speed ground transportation (HSGT) technologies with vehicle speeds exceeding 150 mph can be divided into two basic categories: High-speed rail (HSR) systems, with top speeds between 150 and 200 mph, use steel wheels on steel rails, as with traditional railroads, but can achieve higher speeds because of the design of both the rail bed and cars. High-speed magnetic levitation (MAGLEV) systems, with top speeds between 250 and 300 mph, use forces of attraction or repulsion from powerful magnets placed in either the vehicle or the guideway beneath it both to lift the vehicle above the guideway and to propel it forward. A MAGLEV vehicle can be likened to a flying train or a guided aircraft. If linked effectively with highways and air service, HSGT technologies-particularly MAGLEV—could have a significant impact on congestion in the future. When comparing HSR with MAGLEV technologies, MAGLEV appears to be the technology of choice. Though the new generation of HSR technology can reach co

[单项选择]The high-speed data services for the interconnection of computer networks are usually referred to as ______ connections．
A. LANs
B. MANs
C. WANs
D. ATM

[简答题]High-speed electronic communications media，such as electronic mail，telephone and television，tend to prevent meaningful and thoughtful communication．
To what extent do you agree or disagree with this statement
You should write at least 250 words．
You should use your own ideas，knowledge and experience and support your arguments with examples and relevant evidence．

[填空题]Jack likes driving at a high speed.
Jack likes driving ______.

[填空题]high-speed notebook computer is much better than that the bulky low-speed

[单项选择]High-speed Internet provider At Home Corp. is buying Excite Inc., one of the leading destinations on the World Wide Web, for about $ 6.7 billion in stock in one of the largest Internet company deals. The deal announced today would surpass America Online Inc.’ s $ 4.2 billion acquisition of Netscape Communications Corp. last year. Based on closing stock prices Friday, Excite is worth about $ 3. 4 billion, which would mean that At Home would be paying a huge premium. The deal could eventually give telecommunications giant AT&T Corp. control of one of the highly sought-after portals that serve as entry points onto the Internet.
At Home is owned by Tele-Communications Inc., Cox Communications and several other investors. TCI is in the process of merging with AT&T Corp. in a $ 39 billion deal that is expected to be completed by spring. AT&T Corp. chief executive Michael Armstrong has stated he wants to use At Home as a conduit for delivering a wide range of communications services, i
A. Because Tom Jermoluk wants to control his strongest competitor.
B. Because it Wants to expand its business through Excite’s present resources.
C. Because both companies are based in Redwood city, California.
D. Because it has lost $9.7 million in the last three months.

[填空题]High-speed trains are often the fastest way to travel between city centers in Europe, beating short-haul flights for journeys of up to 550 kilometers. At speeds of up to 320 kilometers an hour, the train certainly takes the strain; compared to airports, high-speed train stations are stress-free citadels (要塞) of peace.
Trains also score well on that shifting equation of comfort, convenience and cost: On short-haul flights, flying time can be as little as 20 percent of total journey time. What counts most with mil travel is the quality of uninterrupted time from the moment you board to the time you arrive: a train station’s 10-minute average check-in time for business travelers includes going through security. Take the lap-top and do a pile of work in peace. A study shows that business travelers are willing to travel up to four hours on a high-speed train because of" increased productivity" compared with airline travel, while the limit for leisure travelers is trips of up to six h