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:0.85
所属科目:小学英语
听录音,选出句中你所听到的内容。
______) 1. A. paper                     B. newspapers                 C. palace
______) 2. A. cloudy                    B. windy                      C. rainy
______) 3. A. waste                     B. wood                       C. water
______) 4. A. sky                       B. skate                       C. skin
______) 5. A. smell                     B. still                        C. spell
______) 6. A. clean your living room       B. clean your classroom           C. clean your bedroom
______) 7. A. making a poster             B. protect the Earth               C. doing a project
______) 8. A. many trees                 B. much energy                  C. more flowers
______) 9. A. eat dumplings              B. each student                  C. fit me
______) 10. A. No eating.                B. No fishing.                   C. No swimming.
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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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