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This morning Bill came into his classroom. “I'm sorry, sir. I lost a piece of paper,” said Bill. “It doesn't matter. Please be careful when you do something,” said the teacher. “But it was very important for me. It was my homework.” “Really?” asked the teacher. Then he laughed and said to Bill, “I can give you another piece of paper and you must finish it this evening.” Bill's face turned red.
1．Bill was a_____________.（ ）| A．teacher | B．pupil | C．worker | D．farmer |
| A．do his homework | B．watch TV | C．go home | D．go to bed |
| A．work | B．classroom | C．homework | D．housework |
| A．afternoon | B．evening | C．noon | D．morning |
| A．green | B．red | C．white | D．purple |
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
