搜索
 A. school (例) |  B. impolite |  C. forest |  D. pollute |
 E. bottom |  F. airport |  G. scientist |  H. sad |
Example: Children learn and have lessons here. A
1．The lowest part of something.
2．It means someone has bad manners.
3．A place for planes to land and take off.
4．A person who invents something new.
5．It’s the land that is covered with trees and plants.
6．you feel unhappy because bad things happened.
7．Make water, air. or land dirty.
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
