The quality of many people’s lives has become worse in some ____ because of technological progress.
A)approaches
B)respects
C)results
D)inspects
A)approaches
B)respects
C)results
D)inspects
阅读理解 |
The opinion of many engineers is that the architects that designed the New York World Trade Center Twin Towers did a good job in designing the buildings. The buildings were safe from the hazards envisioned (预想到的) at the time. Indeed, they were designed to withstand the force of aircraft that might crash into them. They were not however, designed to withstand the effects of the very high temperatures produced by the ignition (点燃) of aviation fuel carried by the aircraft. Steel lightly covered with concrete is the main structural part of the towers and steel loses a lot of structural strength when heated to 1100 degrees Centigrade and beyond, as it was. To protect the steel the towers beams were coated with a few centimeters of concrete. That insulation (隔离) was to provide structural state of being complete for at least 1 hour of fire. The towers met that test. The south tower lasted 62minutes. The north, 103 minutes. Tragedy followed when not all could escape before the collapse. Most experts agree that the Twin Towers were very well designed. Many also agree that the people planning the attacks were very knowledgeable and aimed the aircraft at a height that would produce the most damage. The aircraft crash and the resulting fuel fed fires were aimed at about the 90th floor. That was just high enough to insure that the upper floors would weaken with the heat and crack down, dropping into the remaining part of the building. The mass of the falling top floors created such a falling load that some experts estimate it exceeded by 5 to 10 times normal bearing loads. The effect was like a giant hammer, each floor contributing more weight to be born by the next floor down. Were the Trade Towers well designed? Engineers say yes. But, the public holds to the belief that architects will never again design a tall building without considering the effects of terrorist attacks of all potential kinds. That not only includes the ability of the structure to withstand attack but the means to allow the buildings occupants to escape in time to survive. |
1. Many engineers believe that the Twin Tower was well-designed after September 11 because _________________. |
A. it could withstand aircraft crashing into it at the moment B. it could withstand any natural hazards such as earthquake or fire C. it had an attracting and beautiful appearance until they were destroyed D. they had the miserable honor of being selected as the target of terrorist attack |
2. According to the article, those who designed the tower could have done better if _______. |
A. the tower lasted longer after being attacked B. the tower held stable until all of the people in there managed to escape C. the tower can be immune to such attacks D. they considered more about the effects of the very high temperatures and made duel(决定性的) changes in the structure |
3. The part of the building below 90th floor _____________. |
A. remained where they were B. cracked down because of the burning C. was hammered down by the falling upper part D. was safe after the attack |
4. The author believed that the Twin Towers ____________. |
A. were not well- designed B. were well-designed C. were good examples for engineers of our time D. were out of consideration when we talk about engineering later |
One of our foreign trade companies received an offer from the D company which is in Paris, France on July 16, 2009: "500 MERTICTON TINPLATE USDOLLARS540 CFR CHINA PORT AUGUST SHIPMENT SIGHT L/C SUBJECT TO YOUR REPLY REACHING US BY JULY 20. " We replied on July 17 stating that “we can accept the offer if the unit price is USD 500.00 CFR CHINA PORT; if there are some disputes, arbitration in China”. The D company replied by cable on July 18, “as the market is firm, the price can not be reduced;the arbitration can be accepted, and reply as soon as possible”. There is an upward tendency in the tinplate's price at the same time. So we replied by cable “we accept your offer of 16th. The L/C has been established through the Bank of China, please confirm”. However the French businessman did not confirm and returned the L/C. Question: Is the contract established? Do we make any mistakes? Explain the reasons
A、 the;a
B、a;the
C、a;a
D、the;the
Regardless of its power source, the auto in the future will still be the main problem in urban traffic congestion (拥挤). One proposed solution to this problem is the automated highway system.
When the auto enters the highway system, a retractable (可伸缩的) arm will drop from the auto and make contact with a rail, which is similar to those powering subway trains electrically. Once attached to the rail,the car will become electrically powered from the system, and control of the vehicle will pass to a central computer. The computer will then monitor all of the car&39;s movements.
The driver will use a telephone to dial instructions about his destination into the system. The computer will calculate the best route, and reserve space for the car all the way to the correct exit from the highway. The driver will then be free to relax and wait for the buzzer (蜂鸣器) that will warn him of his coming exit. It is estimated that an automated highway will be able to handle 10,000 vehicles per hour, compared with the 1,500 to 2,000 vehicles that can be carried by a present-day highway.
Choose correct answers to the question:
One significant improvement in the future car will probably be ________.
A.its power source
B.its driving system
C.its monitoring system
D.its seating capacity
What is the author’s main concern?A.How to render automobiles pollution-free.
B.How to make smaller and safer automobiles.
C.How to solve the problem of traffic jams.
D.How to develop an automated subway system.
What provides autos with electric power in an automated highway system?A.A rail.
B.An engine.
C.A retractable arm.
D.A computer controller.
In an automated highway system, all the driver needs to do is ________.A.keep in the right lane
B.wait to arrive at his destination
C.keep in constant touch with the computer center
D.inform the system of his destination by phone
What is the author’s attitude toward the future of autos?A.Enthusiastic.
B.Pessimistic.
C.Optimistic.
D.Cautious.
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