阅读理解，回答问题。

     Lots of people like diving into water because they can explore (探索) the underwater world. But there is

another kind of diving. Some people dive into the sky! This is really a very exciting sport. A skydiver goes

high up in the air on a plane,jumps off the plane and floats in the air with the help of a parachute. A parachute

is like a huge umbrella. It is put on the back of the skydiver. When the skydiver reaches a certain height, he

will pull a string and the parachute will open up in seconds and carry him gently down to the ground.

Skydivers like doing a lot of dramatic tricks in the air. After jumping off the plane one after another, they will

try to stay in the air and hold each other's hands. They can form different shapes.

     Is it safe to do skydiving? Yes,as long as we receive right. But sometimes,accidents do happen. In Canada,

two skydivers were killed in 1991 when they jumped off the plane. Because their parachutes got tied up with

each other. The parachutes could not open up and both crashed down and died.

1. Why do people like diving into water?

    __________________________________________________

2. How does a skydiver go up into the sky?

    __________________________________________________

3. What does the word "parachute" probably mean in Chinese?

    __________________________________________________

4. What does a parachute look like? 

    __________________________________________________

5. Why did the two skydivers die in Canada in 1991? 

    __________________________________________________