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To : Sarah @ penpal . com
From : Liu Yun @ penpal . com
Dear Sarah ,
English must be fun ! I live in China with my mom , my dad and my little brother . My mom is an English teacher . She likes listening to music. My dad is a doctor . He likes watching TV . My little brother is only four . He likes playing with his dolls . I’m a student . I like drawing pictures and collecting stamps .
Your new friend
Liu Yun
1．Where does Liu Yun live ? ( )
| A．China | B．America |
| A．Yes , she does . | B．No , she doesn’t . |
| A．watching TV | B．listening to music |
| A．Yes , he is . | B．No , he isn’t . |
| A．3 | B．4 |
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
