一个数由80个1，3个百分之一，5个千分之一组成，这个数是______，保留一位

阅读下面短文,根据短文中的信息,完成文后表格。(每空一词)
根据短文内容，在空格里填入恰当的词语。注意：每个空格只填一个单词。
There are many things you can do to improve your memory. Among them are many kinds of useful ways are well as taking special care of your health.
It is important that you make yourself excited to make your memory more active. You can do this by doing some new activities and by changing your daily habits. Learning a new skill helps your brain（大脑）to develop. When trying to remember something, you should pay special attention to the most important things about it .Do not allow other thoughts to enter your mind because this will reduce your chances of making right memories.
An excellent way to help memory is to connect information with pictures. Try to see the pictures in your mind. Taking notes and keeping a diary will also be helpful.
Healthy food and plenty of vitamins are necessary for your memory to work well. Drinking a lot of water also helps keep your memory. You must allow your brain to have enough sleep and rest. When you are asleep, your brain stores memory. Not enough sleep can cause problems with storing information. And being tired will also stop you from being able to think clearly and well.
In order to keep your mind on your work, you must be free from worry. Generally keeping fit and normal health checks are both important as well-not just for improving your memory.

Title	How to _1_Your Memory
Main 2	*taking special_3_of your health
	*making yourself excited to make your memory more active by taking _4_in some new activities and changing your daily habits.
	*paying attention to the most _5_things,in order to add to your chances to _6_right memories
	*connecting information with _7_
	*taking notes and _8_diaries
Other ways	*eating_9 _food and taking plenty of vitamins
	*drinking a lot of water
	*having _10_sleep and rest