学进去-教育应平等而普惠
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类型:阅读单选
难度系数:0.65
所属科目:初中英语
阅读下面短文,从各题所给的A、B、 C三个选项中选出最佳选项,并将选项号填入答题卡上对应题号后面的括号内。

Soon computers and other machines will be able to remember you by looking at your eyes! The program works because everyone’s eyes are different. So in the future you won’t have to remember a number when you want to use a machine or take money out of a bank. You’ll just have to look at the machine and it will be able to tell who you are.

The eye-recognition(眼睛识别) program has already been tested in shops and banks in the USA, Britain, Spain, Italy and Turkey. Soon this technology(技术) will take the place of all other ways of finding out who people are.

However, scientists are also working on other systems. Machines will soon be able to know you from the shape of your face or hand or even your smell! We already have machines that can tell who you are from your voice or the mark made by your finger.

Eye-recognition is better than other kinds because your eyes don’t change as you get older, and don’t get dirty like hands or fingers, and even twins have different eyes. So the eye-recognition program can be up to 94% correct, depending on how good the technology is. However, some other programs may only be 51% correct at present. In Britain, it was found that 91% of people who had tried it said that they liked the idea of eye-recognition.

In the future your computer will be looking you in the eye. So smile!

1.Where is the eye-recognition program being tested?
A.Shops in China.B.Schools in Britain.C.Banks in American.
2.Which recognition program is already in use ?
A.Smell-recognition.B.Finger-recognition.C.Face-recognition.
3.How many recognition programs are mentioned in this text?
A.4B.5C.6
4.What’s the last paragraph mainly about?
A.Most people like the eye-recognition.
B.Computers can remember you by looking at your clothes.
C.The eye-recognition is the best program.
5.Why are scientists working on the recognition programs?
A.To make people’s life easier.
B.To make the business develop better.
C.To make computers and machines work faster.
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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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