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（_____） 2. 
（_____） 3. 
（_____） 4. 
（_____） 5. 
（_____）A. Lily wants to give her mother a present for her birthday.
B. Lucy doesn't want to clean her room.
C. Many people from all around the world visit the Great Wall every year.
D. Many people visit the Huangshan Mountain. Because it's very beautiful.
E. “Don't play computer games. It's bad for your eyes.” says Mary.
A. Lily wants to give her mother a present for her birthday.
B. Lucy doesn't want to clean her room.
C. Many people from all around the world visit the Great Wall every year.
D. Many people visit the Huangshan Mountain. Because it's very beautiful.
E. “Don't play computer games. It's bad for your eyes.” says Mary.
同类型试题
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
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
