题目内容
It is an unfair thing for our students____ have devoted 12 years to preparing the exam to be beaten by those_____ use illegal methods.
- A.who; 不填
- B.不填，who
- C.who，who
- D.不填，不填
考查定语从句。先行词是人时关系词用who，关系词在从句中作宾语时可以省但是作主语时不可省。“对于我们这些投入十二年时间备考的学生来说被那些使用非法手段的人打败是不公平的”。选Ｃ
Many American presidents in the 19th century were born in poor families. They spent their childhood in little wooden rooms. They got little education . Washington and Lincoln, for example, never went to school and they taught themselves. Lincoln once did jobs of a worker, shopkeeper and post officer in his early years.
A large number of U. S. presidents had experiences in the army. The two best known were Ulysses Grant and Dwight D. Eisenhower. Grant was a general (将军) in the American Civil War and Eisenhower was a hero in the Second World War. It happened that they graduated from the same school—West Point Military Academy . One may be surprised to learn that both of them did not do well in the school. Eisenhower, for example, was once fined (罚款) because he broke the rules of the school.
The jobs of U. S. presidents are tiring. He must keep an eye on anything important which happens both at home and abroad. Every day, a lot of work waits for him to do, and he has to make many important decisions. When Franklin Roosevelt was a child, he was once brought to visit President Taft. The old president said to him, “When you grow up, you should not be president. It’s a tiring job.”
【小题1】In the nineteenth century, many U.S. presidents .
| A．did not have much knowledge in their work |
| B．had been workers, shop-keepers and post officers in their early years |
| C．couldn’t receive good education before they grew up |
| D．didn’t want to go to school during their childhood |
| A．while studying in West Point Military Academy. |
| B．during the American Civil War |
| C．after he was elected President of the U. S. |
| D．during World War II |
| A．pay close attention to | B．not pay attention to |
| C．look at something with one eye | D．never keep in mind |
| A．In the U. S. no one wanted to be president because it was tiring. |
| B．None of the presidents except Taft could do the tiring job. |
| C．It is an important and tiring job to be a president in the U. S. |
| D．President Taft didn’t want Roosevelt to be a president because he was too young. |
| A．Many of the U. S. presidents had served in the army before they took office. |
| B．Only those who didn’t work hard at school but were good at fighting could be presidents. |
| C．Grant and Eisenhower became well-known because they both graduated from West Point Military Academy. |
| D．Eisenhower was President at the beginning of the Second World War. |
You never see him, but they’re with you every time you fly. They record where you are going, how fast you’re traveling and whether everything on your airplane is functioning normally. Their ability to withstand almost any disaster makes them seem like something out of a comic book. They’re known as the black box.
When planes fall from the sky, as a Yemeni airliner did on its way to Comoros Islands in the India ocean June 30, 2009, the black box is the best bet for identifying what went wrong. So when a French submarine (潜水艇) detected the device’s homing signal five days later, the discovery marked a huge step toward determining the cause of a tragedy in which 152 passengers were killed.
In 1958, Australian scientist David Warren developed a flight-memory recorder that would track basic information like altitude and direction. That was the first mode for a black box, which became a requirement on all U.S. commercial flights by 1960. Early models often failed to withstand crashes, however, so in 1965 the device was completely redesigned and moved to the rear of the plane – the area least subject to impact – from its original position in the landing wells (起落架舱). The same year, the Federal Aviation Authority required that the boxes, which were never actually black, be painted orange or yellow to aid visibility.
Modern airplanes have two black boxes: a voice recorder, which tracks pilots’ conversations, and a flight-data recorder, which monitors fuel levels, engine noises and other operating functions that help investigators reconstruct the aircraft’s final moments. Placed in an insulated (隔绝的) case and surrounded by a quarter-inch-thick panels of stainless steel, the boxes can withstand（抵挡）massive force and temperatures up to 2,000℉. When submerged（潜入水中）, they’re also able to emit signals from depths of 20,000 ft. Experts believe the boxes from Air France Flight 447, which crashed near Brazil on June 1,2009, are in water nearly that deep, but statistics say they’re still likely to turn up. In the approximately 20 deep-sea crashes over the past 30 years, only one plane’s black boxes were never recovered.
1.What does the author say about the black box?
|
A．It ensures the normal functioning of an airplane. |
|
B．The idea for its design comes from a comic book. |
|
C．Its ability to ward off disasters is incredible. |
|
D．It is an indispensable device on an airplane. |
2.. What information could be found from the black box on the Yemeni airliner?
|
A．Data for analyzing the cause of the crash. |
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B．The total number of passengers on board. |
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C．The scene of the crash and extent of the damage. |
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D．Homing signals sent by the pilot before the crash. |
3. Why was the black box redesigned in 1965?
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A．New materials became available by that time. |
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B．Too much space was needed for its installation. |
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C．The early models often got damaged in the crash. |
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D．The early models didn’t provide the needed data. |
4. What do we know about the black boxes from Air France Flight 447?
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A．There is still a good chance of their being recovered. |
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B．There is an urgent need for them to be reconstructed. |
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C．They have stopped sending homing signals. |
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D．They were destroyed somewhere near Brazil. |