单项选择题

Earth Day falls on ______.

A．April 22
B．April 22, 1970
C．April 22, 1990
D．Sunday, April 22
<上一题 目录 下一题>
热门 试题

单项选择题
Protecting the earth is a worldwide question because ______
A．pollution is everywhere in the world
B．polluted air and water in one place affects distant areas
C．people all over the world are responsible for the pollution problem
D．all of the above
单项选择题
A desert is probably ______.
A．grassy
B．wet
C．treeless
D．muddy
相关试题