英语阅读理解,文章：If you do not use your arms or your legs for some

英语阅读理解,
文章：If you do not use your arms or your legs for some time,they become weak:when you start using them again,they slowly become strong again.Everybody knows that.Yet many people do not seem to know that memory works in the same way.
When someone says that he has a good memory,he really means that he keeps his memory in practice by using it.When someone else says that his memory is poor,he really means that he does not give it enough chances to become strong.
If a friend says that his arms and legs are weak,we know that it is not his own fault (错误) .But if he says that he has a poor memory,many of us think that it is just his own fault.
Have you ever found that some people can’t read or write but usually they have better memories?This is because they cannot read or write and they have to remember things; they cannot write them down in a little notebook.They have to remember days,names,songs and stories; so their memory is being exercised the whole time.
So if you want to have a good memory,learn from the people:practice remembering.1.What is the man reason for one with poor memory?2.How will they become if you do not use your arms or legs for some time?3.What should you do if you want to have a good memory?4.Why can't some people read or write but they usually have better merories?5.What is the best title for this passage

1.His/her memory is not often used
2.They become weak and won’t become strong until you use them again
3.More practic
4.They have to use their memories all the time
5.How To Have A Good Memory