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（1）
What are you doing , Chen Jie ?____________________________
（2）
What is Zhang Peng doing ?____________________________
（3）
What is your mother doing ?_____________________________
（4）
What is John doing ?_____________________________
（5）
What is your cousin doing ?______________________________
（6）
What is Mike doing ?______________________________
（7）
What is your aunt doing ?______________________________
（8）
What is your brother doing______________________________
（9）
What is your sister doing ?______________________________
（10）
What is your father doing ?_____________________________
（11）
Are you listening to music ?______________________________
（12）
Are you washing the clothes ?______________________________
（13）
Is he picking up leaves ?______________________________
（14）
Is he watching insects ?______________________________
（15）
Is she writing a report ?______________________________
（16）
Is she counting insects ?______________________________
（17）
Are they catching insects ?______________________________
（18）
Are they taking pictures ?______________________________
（19）
Is John reading a book ?______________________________
（20）
Is John eating lunch ?______________________________
（21）
Is Sarah doing the dishes ?______________________________
（22）
Is Sarah doing housework ?_____________________________
（23）
Can you see the elephants ?______________________________
（24）
Can you see the monkeys?______________________________
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
