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Liu Hua: What’s your sister?
Sun Ying: She’s a worker. Is your mother a worker, too?
Liu Hua: No, she’s a doctor. My brother is a doctor, too. What’s your brother?
Sun Ying: He’s a cook.
Liu Hua: What’s your mother?
Sun Ying: She’s a farmer.
（ ）(1) Sun Ying’s sister is a worker.
（ ）(2) Liu Hua’s mother is a worker, too.
（ ）(3) Liu Hua’s brother is a doctor.
（ ）(4) Sun Ying’s brother is a farmer.
（ ）(5) Sun Ying’s mother is a cook.
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
