搜索
Hi! This is my classroom. Look, there is a blackboard on the wall. The teacher is in front of the blackboard. There are twenty desks and forty chairs in the classroom. There are four big windows and two doors. There are forty pupils(小学生) in our class. They are very nice. My classroom is very tidy(整齐的). I like it! What about you?
1．This is my ______. ( )| A．room | B．classroom | C．teacher |
| A．on | B．behind | C．in front of |
| A．twenty | B．forty | C．four |
| A．big | B．small | C．long |
| A．twenty | B．forty | C．four |
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
