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I write three letters. One letter is for my mother. Another letter is for my father. The third letter is for my friend, Peter. I got to the post office for stamps. My mother and my father live in Shanghai. The stamps are two yuan. Peter lives in Canada. The stamps are ten yuan. I buy them.
1．Who lives in Shanghai? ( )| A．My mother and Peter. | B．My father and Peter. | C．My father and my mother |
| A．My mother and I | B．Peter | C．My father |
| A．Twelve yuan | B．Ten yuan | C．Twenty yuan |
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
