ONTAP E9

A. You can go to places where there is no air. There is no air underwater, but you can dive underwater. You can stay underwater a short time just by holding your breath. Air tank let you stay underwater for a long time. Scuba divers wear tanks on their backs. The tanks are filled with gases that make up air. The divers breathe the gases through hoses.
There is less and less air the high up you go. People gasp for breath at the tops of tall mountains. Airplanes must carry air. Once the airplane gets up high, air is pumped into the cabin where passengers sit. Astronauts have to take all the air they need with them – there’s no air in space.
+ Read the passage and write True (T) or False (F)for each sentence: (1m)
SENTENCES
T
F

1. You can go to no-air places.



2. You can only stay underwater a short time without air tank.



3. There is less air on the tops of tall mountains.



4. There is air in space too.



+ Read the passage and answer the questions: (2ms)
5. Can you go to places where there is no air?
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6. Which helps you stay underwater for a long time?
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7. How can you stay underwater for a short time?
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8. Why do astronauts have to take all the air they need with them?
…………………………………………………………………………………………………………………………………………………………………………………………………
B. Many cities have a serious pollution problem. Motor vehicles, factories, and other sources create so much air pollution that it may hang in the air like dirty fog. Air pollution threatens the health of the people who live in cities. City wastes cause water pollution when they are poured into waterways. These wastes kill fish and make some areas unfit for swimming. In addition, many large cities have difficulty disposing of their garbage. The amount of garbage grows each year, but places to put it are quickly filling up.
Citizens, governments, industries, scientists, and business people must work together to gradually reduce pollution. For example, most cities have introduced recycling programs, which cut down on garbage and the space needed to store it. Residents separate recyclable products from garbage, and city governments provide drop-off cites or pick up the products from homes.
SENTENCES
T or F

1. Only motor vehicles cause pollution.


2. Air pollution is not harmful to people’s health.


3. Recycling programs help cutting down on garbage.


4. The amount of garbage doesn’t change every year.


Read the passage and answer the questions: (2.5 pts)
5. What do motor vehicles, factories, and other sources create?
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6. How do city wastes cause water pollution?
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7. Are many large cities difficult with disposing their garbage? Why?
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8. What do recycling programs help?
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C. WRITING: Complete the following sentences using given words (2ms)
1. If we go to school by bike, (we / save / energy/ keep / air / cleaner)
If we go to school by bike, ….………………………………………………………………………………………………………………………………………
2. I think we should reuse and recycle bottles and cans because (reduce / garbage / save / natural resources)
I think we should reuse and recycle bottles and cans because ……………………………………………………………………


D. Read the passage and fill in each blank with the most suitable word: