The missing flight MH 370 attracted the most attention all over the world. The final result was that there were no survivors. Since 1985, Australian professor Ed Galea has interviewed over 2,000 survivors of 105 plane crashes, searching for the keys to keep alive
1. Sitting with your family

If you are traveling in a family group, you should be together with your family. Why? If you sit away from each other, it's only natural that you must want to join your family group when the accident happens. If you do that it’s going to cause more problems.
2. The seat belt
How do you undo your seat belt in your car? You press a button. In a plane, you lift a latch(插销). If you can't undo your seat belt then, you -can't escape and you will lose chances of survival.
3. Facing backward
We would all be safer if airline seats faced backward. But the difficulty with this is that the passengers don't like traveling with their back facing the direction of travel. Experts suggest that the direction of seats should be changed.
4. Put on a smoke hood（头罩）
"Smoke contains toxic (有毒的) gases, narcotic(麻醉的) gases. It contains irritant (刺激的)  gases. If you breathe enough of them you will die," explains Galea. He carries a smoke hood but warns that you must follow his example and learn how to use it. Otherwise you'll waste time trying to put it on time that could be used for making an exit.
5. Listen to the flight attendants
Listen to the flight attendants carefully and read the safety card after you get on the plane. Be prepared. And if you're about to crash, do 1ike this -- head down, ankles behind knees. The brace position is one of the most important things that a passenger should take on board when they fly. It’s designed to reduce your chances of being knocked during a heavy crash.
According to the first paragraph of the passage, what is the correct meaning of “survivors" in Chinese?_

A．黑匣子	B．遇难者
C．幸存者	D．恐怖分子

Is it necessary for us to sit together with our family on the plane?
you follow the example and learn how to use a smoke hood, you'll      your time making an exit.
把短文中划线的句子译成汉语。
What is the main idea of the passage?