学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.64
所属科目:小学英语
听录音,选出你所听到的内容。(听两遍) (10分)
(    ) (1)A. doll               B. dog                  C. doctor
(    ) (2)A. matter             B. mother               C. monkey
(    ) (3)A. bike              B. kite                 C. car
(    ) (4)A. 5:15               B. 5:50                 C. 5:05
(    ) (5)A. coat               B. cold                 C. copy
(    ) (6)A. write              B. white                C. what
(    ) (7)A. blue               B. balloon              C. bird
(    ) (8)A. perhaps            B. puzzle               C. puppet
(    ) (9)A. shorts             B. shoes               C. socks
(    )(10)A. thirty             B. thirteen            C. thirsty
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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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