学进去-教育应平等而普惠
试题
类型:完形填空
难度系数:0.65
所属科目:小学英语

Einstein (爱因斯坦) is saying hello to us! This is a robot Einstein. A Chinese company (公司) made it. The robots can look __________ or angry. It can go straight and __________ left or right. It can run fast and __________. It can do a __________ like a child. It can blink (眨) its __________. It can talk with people in 43 languages (语言). In the future, the robot can guide people in __________ stations. They can be workers in a __________. They can be postmen in the __________. They can read __________ for the children. They can write __________ on New Year’s Day.

1.
A.happyB.tall
2.
A.stopB.turn
3.
A.sit downB.slow down
4.
A.puzzleB.picture
5.
A.eyesB.ears
6.
A.subwayB.book
7.
A.schoolB.factory
8.
A.post officeB.cinema
9.
A.booksB.songs
10.
A.postcardsB.word book
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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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