1. (2017·信丰模拟) 阅读理解

    What if you fall out of a boat and can't swim? Don't be frightened. Remember, your body is full of air. Learn to bounce(弹起) in the water bouncing can save your life.

    First take a deep breath and hold it. Then stand up in the water. You really can float standing up. The water will cover your eyes, but the top of your head should stick out. Let your arms and legs hang loose. Put your chin on your chest.

    Stay under the water until you need a breath. Then bounce out of the water to get one. Bouncing is very easy to do. Raise your arms in front of you, with your hands facing down. Keep them just under the top of the water. Then raise one leg. Pretend you're trying to walk. Now push your hands down and step. After you do this, your head will come out of the water. Blow out all your air, and shout for help.

    Now take a breath of air and hold it. Let yourself slip under the water again. Let your arms and legs hang loose. When you need more air, bounce up again. Keep doing this until people come to help you.

    Anyone can learn bouncing. It doesn't take long to learn. The man who thought of bouncing shows it to little children. Bouncing is easy. And it has saved many lives.

1. （1） What should you do first to bounce in the water?

   A . Bring your hands up in front of you. B . Look around and shout for help. C . Hold your breath and stand up in the water. D . Try to get our head out of water.
3. （2） What does the underlined word “one” refer to?

   A . A shout. B . A rest. C . A walk. D . A breath.
5. （3） What can we learn from the passage?

   A . It's not easy for children to learn bouncing. B . When you bounce up for air, you should also shout for help. C . You can stay under the water until people come to help you. D . Bouncing in the water can produce fresh air for people.
7. （4） What's the passage mainly about?

   A . How to bounce in water. B . How to breathe in water. C . The importance of bouncing in water. D . The importance of swimming in the right way.