学进去-教育应平等而普惠
试题
类型:阅读选择
难度系数:0.85
所属科目:高中英语

Imagine being able to see perfectly in the dark. This dream has become a reality thanks to a newly developed technology. This technology consists of a thin film that will be placed on the lenses (镜片) of regular glasses, The film is inexpensive to make, easy to produce, and is lightweight. It is actually 100 times thinner than a hair. Yet, despite its tiny size, its performance is impressive; this special film allows you to see in the dark.

This technology is able to transform infrared light (红外光), normally invisible to the human eye, and turn this into images people can see. Compared to animals, humans have very impoverished night vision. Over the years, night vision devices (设备) have been developed to help the medical, industrial, and scientific worlds. Scientists are able to study night-time animals by using infrared cameras, while companies use infrared imaging for food quality control.

Traditional infrared devices work by discovering the beat of an object. They use a cooler in low temperature and can be easily influenced by the heat noise. Such shortcoming led the team into exploring an improved device. Their new device is able to function at room temperature.

As the new technology is unlike the traditional devices, it has many future uses. Once this new night vision is available to all, it could save lives. Drivers will be able to see better at night, especially when driving on unlit roads. Police can use them when searching at night, and hikers who lose their way can feel more confident walking in the dark.

The inventors are excited to make the practical application. “While this is the first experiment, we are actively working to further advance the technology. Of course, the many uses are exciting and seeing in the dark opens up a new world for all,” said Mohsen Rahmani, lead developer of the technology.

1.What do we know about the film according to the first paragraph?
A.It costs a lot to make.B.It is difficult to produce.
C.It helps us see in the dark.D.It looks like regular glasses.
2.What does the underlined word “impoverished” in paragraph 2 mean?
A.ClearB.Poor.C.Amazing.D.Effective.
3.What can be inferred about the technology in Mohsen’s words?
A.It needs to be further developed
B.It has been available to common people.
C.It is not exciting enough to scientists.
D.It has become a hit in the experiment.
4.What can be a suitable title for the text?
A.Exciting Technology Makes the Invisible Visible
B.Several Ways Make People See Things More Clearly
C.The Technology Is Developing Very Quickly
D.Infrared Devices Are Very Useful In the Dark
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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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