搜索
Jim has some rules at home. Here are the rules. He must remember them.
Don't play with a sharp knife. You may
Don't eat
Don't run
Don't walk on the wet floor. You may
Don't touch the fan. You'll get hurt.
Don't forget. Safety first.1．
| A．hurt | B．cut | C．fall |
| A．too much | B．much too | C．too many |
| A．hurt | B．play | C．sick |
| A．on | B．near | C．next |
| A．fall down | B．get sick | C．dangerous |
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
