搜索
Tom, Sam, Jim and Jack live in a building of four floors. They live on different floors. They have different jobs - an engineer, a worker, at teacher and doctor. Tom lives above Sam, but below Jim. Jack lives on the third floor. The doctor lives above the teacher, but below the worker. The engineer lives on the Ground floor. What are their jobs? Which floor does each of them live on?
1．How many floors do the building have? ( )| A．2. | B．3. | C．4. |
| A．a teacher | B．an engineer | C．a worker |
| A．The fourth. | B．The second. | C．The third. |
| A．A teacher. | B．A doctor. | C．A worker. |
| A．The first. | B．The second. | C．The third. |
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
