CTO 10 Respirators

Air pollution is often a problem in large cities and can be a serious threat to the health of the people who live in those cities. The main threat to health is caused by small particles in the air. These contaminants are produced by car engines, home heating, and factories.

contaminants means:

• small harmful particles

• water droplets

• clouds of gas

• safe substances

Ali went to a store to buy some perfume. Because he didn’t know which one he wanted, he decided to try one before he bought it. When he sprayed the perfume in the air, it created a mist which he could smell.

mist means:

• something with no smell

• expensive perfume

• droplets of liquid in the air

• something that smells bad

The cold, which is one of the most common respiratory illnesses, mainly affects the nose and throat. It is not caused by cold weather, but by contact with a person who already has a cold. The best way to prevent a cold is by avoiding close contact with those who have colds and by washing your hands frequently.

respiratory means:

• washing

• contact

• cold weather

• related to breathing

Anemia is an illness that can be caused by a deficiency of iron in the body. If there isn’t enough iron in our diets, our bodies can’t produce healthy red blood cells. People who suffer from anemia feel weak and tired.

deficiency mean

• having too much iron

• weak feeling

• not having enough of something

• strength

Propane is a colorless, odorless gas. To help detect its presence in the event of a leak or a spill, manufacturers add a chemical compound to give it a strong smell.

presence means:

• existence

• absence

• escape

• color

While Talal was working in the hot sun, he became sick. His heart started to beat quickly, and his body temperature started to increase. When his coworkers asked him some simple questions, he couldn’t think of the correct answer. Talal’s confusion and physical symptoms worried his coworkers, so they rushed him to the clinic.

confusion means:

• fast heartbeat

• inability to think clearly

• difficulty

• high temperature

I prefer disposable razors because they are cheap and convenient. After using one once or twice, you just throw it away.

disposable means:

• cheap

• can be thrown out after use

• expensive

• easy to use

Eating too much fat is bad for your health because the fat may attach itself to the sides of your arteries. If this happens, your arteries may become clogged, and blood will be prevented from moving through the arteries. This could result in many serious health problems.

clogged means:

• healthy

• bigger

• open

• blocked

Water from the tap is not safe to drink. Therefore, you should attach a filter to the tap to purify the water. Most filters will remove harmful substances like bacteria, leaving only clean water.

purify means:

• remove bad things

• add bad things

• leave something

• move something

There was a large sandstorm traveling across the desert. It was possible to record the movement of the storm using satellite photographs and radar.

movement means:

• change in position

• time

• heat

• density