学进去-教育应平等而普惠
试题
类型:听音,选择听到的内容
难度系数:0.65
所属科目:小学英语
听录音,选出你所听到的内容。听两遍。
(      )1.   A. happy               B. hungry        C. thirsty
(      )2.   A. forest   B. parrot        C. rabbit
(      )3.   A. wet       B. hat        C. well
(      )4.   A. China        B. Canada       C. Australia
(      )5.   A. just right   B. all right        C. just now
(      )6.A. between        B. beside          C. behind
(      )7. A. art room       B. classroom          C. library
(      )8. A. too cold        B. too hot   C. too hard
(      )9. A. long ears       B. a short tail       C. a big mouth
(      )10. A. look at        B. look out        C. look for
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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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