阅读理解天地。    

       船夫的驾驶技术特别好。行船的速度极快，来往船只很多，他操纵自如，毫不手忙脚乱。不管怎么拥挤，他总能左拐右拐地挤过去。遇到极窄的地方，他总能平稳地穿过，而且速度非常快，还能作急转弯。两边的建筑飞一般地往后倒退，我们的眼睛忙极了，不知看哪一处好。 

1．用下面的词语造句。

     不管……总……                                                                                                                           

2．解释下面的词语。 

     手忙脚乱：                                                                                                                                   

     操纵自如：                                                                                                                                    

3．用“∥”把这段话分成两层。 

4．这段话主要写                                                                                                                             。  

5．作者是从哪些方面围绕主要意思写的？

     (1)                                                                                                                                               

     (2)                                                                                                                                               

     (3)