On June 11, China sent up Shenzhou X Spaceship space.
A:at
B:in
C:to
D:on
—I saw a snake___ on the road on my way home.
There are a lot of ____ (potato) in the supermarket.
探究“培养液中酵母菌数量动态变化”的实验方法与注意事项中,不正确的是( )
埃及境内90%以上地区的气候类型是 ( )