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Mary is an Australian girl. She is now in Beijing with her grandparents. Mary is studying Chinese, but she can't speak Chinese very well. Sometimes her Chinese friends don't understand her.
It is Saturday morning. Mary is walking in the street. She is going to the supermarket to buy some drinks. She asks a Chinese girl how to get to the supermarket, but the girl can't understand her. Mary takes out a pen and a piece of paper. Then she draws a bottle of juice on it, and shows the picture to the Chinese girl. The Chinese girl understands now, and she shows the way to Mary.
1．Mary is an Australian girl who lives in Beijing with her parents.2．Mary can speak Chinese well and her friends can understand her.
3．Mary wants the Chinese girl to tell her the way to the supermarket.
4．The Chinese girl understands the picture and she shows the way to 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
