The undersea world is very beautiful．（1）Now more and more people want to dive in deep sea to find the secrets there．Diving is a new sport today．It can take you into a wonderful undersea world．

You will find many strange animals in the sea．Some are as large as a school bus．Many sea animals give out light in the dark and some have sharp teeth．

In the daytime，there is much light．Here，under the sea，everything is blue and green． When fish swim nearby，you can catch them with your hands．When you have bottles of air on your back，you can stay in deep water for a long time．However，you can’t dive too deep． And you must be very careful when you dive in deep water．

（2）深海并非易居之地。It is cold，and it is dark，too．The  3  it is，the less sun．1ight there is．At about 3，000 feet，there is no light at all．It is dark in the sea．Many fishes have no eyes．Some have big eyes．A few have eyes on one side．

Besides the cold and darkness，deep-sea animals face a third danger-other animals．

Like human beings，sea animals also eat!   4  Some of them eat plants．However， some eat meat．This means these sea animals have two big jobs．They need to find animals as food，and they have to try not to become other animals’ meal．

根据文章内容完成下列任务。

◆将划线部分英语句子译成汉语，将汉语句子译成英语。

1．                              

2．                               

◆根据要求选择正确答案。

3．为文章空白处选择合适的词汇。

A．deep                    B．deeper                 C．deepest                  D．more deep

4．为文章空白处选择合适的句子。

A．They have to live alone．                         B．They cook by themselves．   

C．They must find food to eat．                       D．They are starving（饥饿）all day．

◆根据短文内容回答问题。

5．How many dangers do the deep—sea animals have to face? And what are they?