读“七大洲四大洋分布示意图”，回答下列问题。

下列关于达尔文进化学说的叙述，正确的是（    ）

阅读课文《林冲棒打洪教头》选段，回答问题

     “一簇人马飞奔庄上来，中间捧着一位官人，骑一匹雪白卷毛马。马上那人，生得龙眉凤目，皓齿朱唇，三牙掩口髭须，三十四五年纪。头戴一顶皂纱转角簇花巾，身穿一领紫绣团胸绣花袍，腰系一条玲珑嵌宝玉环绦，足穿一双金线抹绿皂朝靴。带一张弓，插一壶箭”
这段描写对塑造人物有什么作用？

Skin-diving(潜水) is a new sport today. This sport takes you into a wonderful new world. It is like a visit to the moon. When you are under water, it is easy for you to climb big rocks, because you are no longer heavy.
Here, under water, everything is blue and green. During the day, there is lots of light. When fish swim nearby, you can catch them with your hands.
When you have tank (罐) of air on your back, you can stay in deep of water for a long time. But you must be careful when you dive into deep water.
To catch fish is one of the most interesting parts of this sport. Besides, there are more uses for skin-diving. You can clean ships without taking them out of the water. You can get many things from the deep sea.
Now you see that skin-diving is both useful and interesting.