阅读理解
The undersea world is very beautiful. Now more and more people want to dive in
the water to find the secrets there. Scuba 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.
During the day, there is enough 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.
The deep sea is not an easy place to live in. It’s cold, and it’s dark, too. The deeper
it is, the less sunlight 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 (除了) the cold and darkness, deep-sea animals face a third danger ---
other animals.
Animals eat! They must find food to eat. Many animals eat plants. However, some
Animals eat meat. This means these sea animals have animals have two big jobs.They
need to find animals as food, and they have to try not to become other animals’ meal.
( )1. Why do people want to dive in the sea? Because ________.
A. they want to catch fish B. they want to find the secrets of the undersea world
C. the sea is deep D. there are all kinds of plants in the sea
( )2. In the daytime, when you dive in the sea, you _________.
A. can see everything green and blue B. can’t be in danger
C. can atch nothing D. can’t see anything clearly
( )3. When you do scuba diving, you can __________.
A. stay in deep water for a long time B. dive very, very deep
C. live in deep water easily D. dive freely without any dangers