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类型:阅读单选
难度系数:0.65
所属科目:初中英语

Earthquake rescue (救援) robots experienced their final tests in Beijing. The inventors of this robot said with this robot, rescuers would be able to buy more time to save lives during an earthquake.

This kind of robot is able to fly. It’s about three meters long, and it took about four years to develop the model. Its main function is to collect information from the air and send goods of up to 30 kilos to people trapped (困住) by an earthquake. It has an excellent camera which can provide very clear pictures. It can work day and night, and is also able to send the latest pictures from the quake area.

Dr. Qi Juntong, a researcher from Tsinghua University, said, “The most important character of this flying robot is that it doesn’t need a control from faraway places. We just set in it the information of the places where it should go, and then it takes off, and lands by itself. It flies as high as 3000 meters, and as fast as 100 kilometers per hour.”

This robot has a different function — it can change as the environment changes. Its main job is to search for any signs of life in places where human rescuers are unable to go. The camera, also acting as a detector (探测器) that finds trapped people and detects harmful gases, is placed in the robot, which can work in the dark. With its 10-meter-long pipe in the robot, people who are trapped in the fallen buildings will be able to get supplies including oxygen (氧气) and water.

Experts have said that the robots would enter production and serve as part of the national earthquake rescue team as soon as possible.

1.In what way is the robot different from others, according to Dr. Qi?
A.It has a very special shapeB.It is able to fly everywhere
C.It works with no information set inD.It doesn’t need a faraway control
2.Which is the function of the camera in the robot?
A.Detecting trapped peopleB.Dealing with harmful gases
C.Providing oxygen and waterD.Sending goods to the quake area
3.Which of the following is TRUE about the robot?
A.It weighs about 30 kilosB.It has not been put into use
C.It works only in the daytimeD.It entered production years ago
4.What does the passage mainly tell us?
A.Earthquake rescueB.The development of robots
C.Tests on a new robotD.An introduction to a robot
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y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19
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