下列各项不能说明海陆处在不断的运动和变化中的是( )
A:各大陆都有人类活动
B:我国东部海底发现古河道遗迹
C:有些大陆的边缘可以较好地吻合
D:云南澄江帽天山发现海洋古生物化石
我国季风显著的原因是( )
Look, this is my city. There are many bikes and buses on the streets. Let's count. There are ____ bikes and ____ buses. Look here, there are also ____ taxis and ____ cars. My city is big and beautiful!
把下列成语补充完整。
狂轰____炸 情不自____ 原____不动
自我安____ 中流____柱 ____精图治
“叶在光下制造淀粉”的实验中,叶片经酒精脱色并滴加碘液后,遮光和不遮光部分显示的颜色分别是( )