8．Skating backwards on ice is a bit difficult but once you master the basis，there's nothing like it．Follow the steps given below and you will be able to skate backwards in no time．
（16）D 
The first thing that you need to do is，stand straight．If you feel that you are falling backwards，then just put your chin up and slightly bend your knees．Don't worry； this happens to all．
（17）G 
The most important step while learning how to skate backwards，is having enough confidence in yourself and in what you are doing．How can you achieve this？By practice，Just practice rolling backwards down a gentle slope every single day or just by pushing off from a wall or something of that sort．
（18）E  
Confident now？Great!Now the next step is to maintain your speed．While rolling in a straight line with one skate，with the other try sculling（滑漿），that is，keep pushing yourself backwards with an outwards stroke（滑動）．Now bring the skate which you were using to scull，and then again，repeat the same process．Make sure that you put most of your weight on the skate which is moving straight and not the one with which you are sculling．Now，try the same thing using the other foot．Again keep doing this till you are confident enough．
（19）B  
Once you are confident that you can scull with either foot，the next thing that you have to do is increase your speed．Try some of your own tricks now．Scull with either foot or with both at the same time．
（20）F
While you keep one foot straight，keep sculling with the other．You can do that simultaneously with both feet．Concentrate on what you are doing but don't get so involved that you don't see where you are going．If you are not watching your back，you might just bang against something or someone．

A．Find Another to Practise with You
B．Increase Your Speed Now
C．Gain Your Courage
D．Stand Straight
E．Maintain Speed
F．Scull and Be Aware
G．Confidence is What You Need．

分析 本文主要介紹了滑冰是有點困難，但是一旦你掌握了基礎(chǔ)，就不是什么難事了．作者給出了以下步驟：1、站直；2、要建立自信；3、保持速度；4、增加你的速度；5、專注滑行．

解答 16-20 DGEBF
16．D小標題選擇．根據(jù)本段內(nèi)容可知，該段主要介紹了你首先需要做的事情是站直．D項：Stand Straight（站直），符合文意．故選D．
17．G歸納總結(jié)題．根據(jù)本段The most important step while learning how to skate backwards，is having enough confidence in yourself and in what you are doing．可知學習如何向后滑的最重要的一步是對自己和正在做的事情有足夠的信心．G項：Confidence is What You Need．自信是你需要．符合文意，故選G．
18．E小標題選擇．根據(jù)后文Now the next step is to maintain your speed．可知接下來是要保持速度．E項：Maintain Speed保持速度，符合文意．故選E．
19．B小標題選擇．根據(jù)后文Once you are confident that you can scull with either foot，the next thing that you have to do is increase your speed．可知一旦你有信心可以用腳滑，那接下來你要做的就是提高你的速度．B項：Increase Your Speed Now增加你的速度，符合文意．故選B．
20．F小標題選擇．根據(jù)本段內(nèi)容可知，當你的一只腳伸直，另一只腳要滑行．而且要專注于你正在做的事情．F項：Scull and Be Aware滑行并且要有意識．符合文意，故選F．

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