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