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　　All students need to have good study habits．When you have good 　　1　　, you learn things quickly．You also remember them 　　2　　．

　　Do you 　　3　　 to study in the living room?This is not a good place, because it is usually too noisy．You need to study in a 　　4　　 place, like your bedroom．A quiet place will help you only to think about 　　5　　 thing．

　　When you study, do 　　6　　 think about other things at the 　　7　　 time．Only think about your homework．If you do this, you will do your homework more quickly, and you will make fewer 　　8　　．

　　Good study habits are very 　　9　　．If you do not have them, try to learn them．If yours are already good, 　　10　　 to make them better．

根据短文内容，用方框中所给单词的适当形式填空，每词限用一次，其中有两个为多余选项。请将答案写在题后横线上。

　　Rainforests cover six percent of the earth’s surface．There are rainforests in many 　　1　　 of the world, but the biggest forests are in South America, Africa and South East Asia．There aren’t any rainforests in Europe or North America．

　　About 75％of all the types of animals 　　2　　 from rainforests．Thousands and thousands of animals live in rainforests．There are many beautiful birds, insects and reptiles．Many of them live in the trees, over 30 meters from the 　　3　　．There are also thousands of different plants－and lots of them are tall trees!It is always hot in a rainforest and the ground is always wet．It is 　　4　　 very dark there．

　　The rainforests are very important for us．We 　　5　　 them!The trees and other plants in the forest help to make the air that we breathe．They also help to control the 　　6　　．They give us wood, rubber, fruits and many of our medicines．

　　Unfortunately, in many places, the rainforests are in danger．For example, many 　　7　　 ago there was a large rainforest in Java．There were thousands of different plants and animals in the forest, but now there is nothing．People cut down the trees 　　8　　 they wanted to grow rice．They also wanted to grow rubber trees 　　9　　 rubber．Many animals lived in the rainforest．Some of them went to other parts of Java, but many of them disappeared－forever．The same thing 　　10　　 now in many other parts of the world．The rainforests are in danger!

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