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Miss Zhang: Hello, Jim. Do you always help your parents?
Jim:
Miss Zhang:
Jim: I clean the rooms and wash the clothes.
Miss Zhang: What else do you do on Saturdays?
Jim:
Miss Zhang:
Jim: About forty minutes.
Miss Zhang:
Jim: Thank you!
| A．Good boy! |
| B．I do my homework. |
| C．What do you do to help your mum on Saturdays? |
| D．Yes, I do housework(家务) every day. |
| E．How many minutes do you do your homework? |
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
