根据短文内容及首字母提示，填写所缺单词，使短文意思完整。每空限一词。
Nogoba was a cavegirl. She lived in a cave with about 40 other people. Cavepeople lived in big groups to help each other. Their l    1     were very dangerous. There were many w   2
animals near the caves — lions, tigers, bears and elephants.
The cavemen hunted. They k    3   the animals for food. The children’s jobs were dangerous, too. Nogoba and her friends went to the river every day to get w   4   . Sometimes, the river was very deep. S    5   , there were animals near the river.
For many months of the y    6   , Nogoba was cold. There was ice and snow everywhere. It was difficult to be w    7  . The children sometimes went to sleep by the fire. Sometimes they were too n    8   the fire.
Sometimes Nogoba and her friends went to f    9     fruit and nuts to eat. Sometimes the fruit and nuts were poisonous and everyone became i   10  . There weren’t any cave doctors or cave hospitals!

The worst danger is a house on fire when people are asleep. Always be ready to leave through a window into the garden by making sure you can open it if necessary. If you should be on holiday in a tall building or hotel,make sure you know where the fire easape（太平梯） is . When you can’t find any way out,try to find pieces of cloth and make a rope to get out of a window to safety. If you smell burning in your home,get out right away. If you can’t breathe properly because of smoke on your way out, crawl（爬行） on your hands and knees because smoke rises and the air will be cleaner near the floor.Smoke is a killer and more people have died from breathing it in than actually being burnt.

Fire in a cinema,hall or public place often means people pushing to reach a door. Keep your head up with arms up in front of your chest（胸）.This protects your chest and gives you the best chance to breathe. Above all, don’t get frightened!

1. In a room filled with smoke ,you’d better crawl on the floor because__________.

A .you won’t ger burnt.              B. the floor is cleaner 

C. there is less smoke near the floor     D.you won’t breathe any smoke

2. Which of the following is NOT true?

A. In a fire, more deaths are caused by smoke.

B. The most important thing is not to be frightened in a fire

C. When a public place is on fire, people usually push to leave.

D. Be ready to leave a burning house through a window if there is a garden down below.