Taking________ exercise in the open air is a good way to prevent yourself from _______ a cold.

1. A.
   more；catch
2. B.
   much；catch
3. C.
   more；catching
4. D.
   less；catching

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 escape（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!
【小题1】In a room filled with smoke ,you’d better crawl on the floor because__________.

Air is always around us. It is around us when we walk and play. From the time we are born, air is around us. When we sit down, it is around us. When we go to bed, air is also around us. We live in air.

All the animals and plants need air. Living things can’t live without air. We can live without food or water for a few days, but we can not live for more than a few minutes without air. We breathe in air. When we are walking or running, we need more air. When we are asleep, we need less air.

We live in air, but we can’t see it. We can only feel it. We can feel it when it is moving. Moving air is called wind. How can we make air move? Here is one way. Hold and open a book in you hand in front of your face. Close it quickly! What you feel is the air.

1._________ need air.

A. Some of the animals????????????? B. All the things

C. Some of the plants????????????? D. All the animals and plants

2.We can live for a few days __________.

A. without air????????????? B. without food or water

C. without food or air????????????? D. without air or water

3.We need _________ air when we are asleep.

A. less????????????? B. no????????????? C. most????????????? D. a lot of

4.Which of the following sentences is TRUE(对的)?

A. Sometimes we don’t live in air.????

B. Air is not around us when we go to bed.

C. We can live happily without air.???

D. We need more air when we are working or running.

5.We live in air, but we can’t ________ it.

A. look????????????? B. see????????????? C. get????????????? D. feel

1.The scientist finally made his dream come true in his ______________.（ninety）

2.It’s ___________（fair）for people to blame air pollution on the developing countries.

3.Who do you think will be the first Chinese ______________（walk）on the moon?

4.The ______________（salesman）addresses and telephone numbers are recorded in yellow pages.

5.Of all, Chen Xin did the experiment _____________（success）. She is the perfect helper that we need.

6.—Does the white kite belong to ______________（she）—No, that’s ours. Her kite was made in blue.

7.I don’t think Kate saw me. She ______________（quarrel）with her classmates then.

8.A better transport system can make our city ______________（crowd）than before.

9.______________（fix）the mess in his computer, he searched the internet for further information.

10.—Why didn’t Tom go to the cinema yesterday?   —He ______________（see）the film twice.

11.Our headmaster insisted that all students should ______________（dress）neatly and properly.

12.Soon they found they had no choice but _____________（sit）there waiting.

13.The Centre is open ______________（day）8.30 a.m. -4.30p.m..

14.As result of the ______________（lose）of too much blood, the old man passed away at last.

15.Follow me, guys! Close your eyes, open your arm and ______________ （breath）deeply.