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学进去-教育应平等而普惠
试题
类型:阅读选择
难度系数:0.65
所属科目:小学英语
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Run Away From Fire

If there is a big fire in your flat, what should you do? What mustn't you do?

Make a towel(毛巾)wet and cover your mouth with it. Make your clothes wet with water. Try to get out of the house at once(立刻). Don't take too many things with you. Don't come back for your money or other things. Don't take the lift(电梯) when you get out of your flat. Walk down the stairs. If your clothes catch fire, don't run. Roll(滚)on the ground to make the fire die down(熄灭). If there is a lot of smoke, crawl(爬行)on the ground. Smoke is always high in the air. If your flat is on a tall building, don't jump down. Stay by the window and people may come to help you soon.

1.If there is a big fire in your flat, cover your mouth with a       towel. (  )
A.dryB.wetC.cool
2.When you get out of your flat,don't take the       . (  )
A.liftB.stairC.floor
3.If your clothes catch fire       . (  )
A.run quickly
B.go to find water
C.roll on the ground to make the fire die down
4.Why should you crawl on the ground if there is a lot of smoke? (  )
A.Because smoke is always high in the air.
B.Because smoke is always down in the air.
C.Because smoke is always beside the air.
5.What should you do if your flat is on a tall building? (  )
A.Jump down.B.Stay by the window.C.Stay by the door
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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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