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学进去-教育应平等而普惠
试题
类型:任务型阅读
难度系数:0.65
所属科目:小学英语

July 20th, 1969 was an important day. Two Americans got to the moon. They were the first men on the moon. Their names were Armstrong and Aldrin. Their spaceship’s name was Apolo 11. They left the earth on July 16th. It took them three days to get there. There is no air, no water, no plant and no animal on the moon. They picked up some rocks and brought them back to the spaceship. They jumped up and down. They were very tired after moonwalking, so they took a rest. On July 21s, Apollo 11 left the moon and came back to the earth.

1.What was the date when the two Americans got to the moon?
________________________
2.Were they the first men on the moon?
________________________
3.How long did it take them to get to the moon?
________________________
4.Did they see any animals on the moon?
________________________
5.How did they feel after moonwalking?
________________________
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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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