5．__________that knife before you hurt somebody!

　　把那刀子放下，以免伤人！

　　答案

　　1．who do not take exercise；whose diets are high in fat

　　2．causing a serious flood　3.on the spot

　　4．give his own life to　5.Put down

Ⅲ.阅读理解

　　A

　　Animals are considered to be endangered if the species is close to extinction throughout all or most of its environment. Animals become endangered for a variety of reasons.

　　 Some animals become endangered when their habitats contain resources for humans. For example, commercial forest cutting in the Amazon Rainforest has seriously reduced the population of many animal species and led to the extinction of other groups. Land itself is an important resource to humans since it provides us with living space, and when people replace animal habitats with human habitats，it can lead to a larger loss of natural species.

Commercial and industrial operations may reduce land or water for animals and pollute their environment. Due to water pollution，the baiji, a fresh water dolphin native to China, was declared extinct, meaning it's unlikely that the population can recover. Even noise pollution from