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（1）A. I'm from China.
B. I'm a Chinese teacher.
C. I'm not Chinese.
（2）A. There are 45.
B. There are 54.
C. Yes，there are.
（3）A. Yes，he is.
B. Yes，she is.
C. Yes，they are.
（4）A. He goes to work at 7∶00.
B. He goes to work by bus.
C. He is a doctor.
（5）A. I like reading newspapers.
B. I go to school on foot.
C. My favourite colour is red.
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
