完形填空（共15小题；每小题1分，计15分）
阅读下列短文，从文后各题所给的四个选项中选出一个最佳答案。
Do you know how to study __1__ and make your study more effective (有效的)?　We all know that Chinese students usually study very hard for long　__2__, This is very good ,but it doesn’t__3__a lot ,for an effective student must have enough sleep ,enough food and enough rest and __4__. Every day you need to go out for a walk or visit some friends or some nice places. It’s good for your__5__.
When you return __6__your studies, your mind will be refreshed(清醒)and you’ll learn more__7__study better. Psychologists (心理学家)　__8__ that learning takes place this way. Here take English learning __9__ an example. First you make a lot of progress（进步）and you feel happy. __10__ your language study seems to stay the same. So you will think you’re learning nothing and you may give __11_. This can last for days or even weeks, yet you __12__ give up, and at some point your language study will again take another big __13__. You’ll see that you really have been learning all along. If you get enough sleep, food, rest and exercise, studying English can be very effective and __14_ . Don’t give up along the way. Learn __15__ ,you are sure to get a good result(结果).

There are nineteen boys and twenty-eight girls in our class.  1 　the boys is English. His 2 is Sam. He is thirteen. Two of the  3  are American. They are twins. 4　names are Lucy and Jane. They are twelve. They are my  5　. All of the other boys and girls are  6 　. We all like the English boy and the American girls,  7  they like us, too. We play games together（一起）. We help  8  and they help us.

　　Look, there   9  the twins! They are coming this way.  Let's 10  hello to them.

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