A:质量增加6.4g
B:质量增加12.8g
C:质量减少6.4g
D:质量减少12.8g
魏格纳兴奋极了,将地图上一块块陆地进行了比较,结果发现,从海岸线的相似情形看,地球上所有的大陆块都能够较好地吻合在一起。
于是,这位年轻人的脑海里形成了一个崭新的奇想:在太古时代,地球上所有的陆地都是连在一起的,后来因为不断漂移,才分成今天的各个大陆,它们的海岸线才会惊人地吻合。
第二天一早,他叩( )开了著名科学家柯彭教授的大门,把自己这个想法告诉了他。教授肯定了他的假想有道理,,并说也曾有人提起过,但都没有足够的事实加以证明。教授劝他打消念头,不必为此枉( )费心机。
My name is Chen Lan. My home is in Gulangyu. Do you know it? It is in Xiamen. It is near the sea(海). Gulangyu is a small place,but it is very nice and clean. There are no cars,no buses. People only walk. So it is very quiet. Our house is in the middle of Gulangyu. Behind our house there is a big old tree. My grandfather tells me that the tree is very,very old. There are many birds in the tree. We call it a “bird tree”. Our house is near the sea. The sea is big and blue. There are a lot of fish in the sea. After school,I go there and catch(捉) fish with my friends. It is very interesting. I like fish and I like catching fish.
读图,完成:
如图为人体呼吸过程的模式图,请据图分析回答:(“”中填字母,“_”上填文字)
依然 显然 突然 当然
①保罗饶有兴趣地看着这个男孩,从衣着来看,他的家庭____并不宽裕。
②“你愿意坐我的车兜一圈吗?” “____,我非常愿意。”
③你母亲已不在这个世界上了,但她能看见你,她____爱着你,她还生活在你身边。
④卡罗纳翻开书,当他看到一幅母亲拉着儿子的手的插图时,____双手抱住脑袋,号陶大哭起来。