—I TV at home.
A:watch
B:watched
C:am watching
D:will watch
238÷42≈____
452÷5≈____
图甲、图乙为某种生物种群的年龄组成曲线,如不考虑其他因素,种群甲和种群乙未来个体数量的发展趋势是( )