—About 600,000.
A:What's the weather like in your city
B:What's the score
C:What's the population of your city
D:What's the matter
已知二元一次方程2x﹣y=1,用y的代数式表示x为( )
下列各植物结构中,属于器官的是( )
—Where did you go last holiday?
—I ____ to the Great Wall.