[填空题]People see him when they’re ill

[填空题]People see him when they’re ill

[填空题]When one is ill, he or she wants to see him.

[单项选择]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.
Modem 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 massive force and temperatures up to 2000℉. When submerged, they’re also able to emit signals from depths of 20000ft. Experts believe the boxes from Air France Flight 447, which crashed near Brazil on June 12009, 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.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.

[单项选择]W: Do you let people know when you’re taking pictures of them
M: I try not to. You know any picture of a person who poses for the camera would look dull and unnatural.
Q: What are the speakers talking about（　）
A. Taking photographs.
B. Enhancing images.
C. Mending cameras.
D. Painting pictures.

[单项选择]

Sometimes, when people first see an automobile factory, they think it has no form. It is so big that it is impossible to see the design of the whole plant. In fact, the factory has been very carefully de signed, so that it can be as efficient as possible.
There is not just one assembly line in the factory; there are several. On the main one, the chassis (车架) of the car is put together. The chassis is the frame on which the rest of the car is built. In another part of the factory, the body of the car is stamped out on sheets of steel. The body is painted, and then the two assembly lines come together. The body is lowered onto the chassis and fitted to it.
Meanwhile, in still another part of the factory, the engine is being put together on another assembly line. The central part of the engine is called the block, and the various other parts of the engine are fitted to it by different workers as it passes down the line. An internal combustion engine is a complicated
A. how a car is made
B. the assembly line technique in a car factory
C. how complicated a car is
D. how a car is designed

[单项选择]

Paragraph 1 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.
Paragraph 2 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.
Paragraph 3 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
A. There is still a good chance of their being recovered.
B. There is an urgent need for them to be reconstructed.
C. They have stopped sending homing signals.
D. They were destroyed somewhere near Brazil.