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（1）How old is Sarah?
A. Fifteen. B. Twelve. C. Ten.
（2）How many people are there in Sarah’s family?
A. Four. B. Five. C. Six.
（3）How many girls are there in Sarah’s family?
A. Three. B. Four. C. Five.
（4）What does Sarah’s mother do?
A. She’s a housewife. B. She’s a teacher. C. She’s a nurse.
（5）Is Sarah’s father an engineer?
A. Yes, he is. B. No, he isn’t. C. Yes, he does.
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
