Thousands of persons in Peru are suffering from the disease cholera. Medical experts say it is the first time in their century that cholera has reached the western part of the world. The United States Centers for disease control says the kind of cholera has been spreading throughout the world since 1961. It was discovered that year in Indonesia. Since the first case in Peru, more than sixteen thousand people have been affected and about one hundred have died.

Cholera is caused by polluted food and water. People become infected (傳染) when they eat the polluted food or drink the polluted water. If untreated immediately, they may die within hours. Most victims however, can be saved. Treatment includes drugs and replacement of body fluids (液體) directly into the blood.

Medical researchers have developed a vaccine (菌苗) medicines to protect against cholera. But the vaccine is only about 50% effective. And it protects against cholera for only about six months. Medical experts say the best way to fight cholera is to prevent it. They also say people should not eat uncooked food or food that has not been cooked long enough. People who live in areas where cholera has been found should wash their hands before eating and cooking. They should drink only water that has been boiled or made pure with chemicals.

1.The underlined word “Cholera” in the first paragraph means ________.

A. a certain place in Peru

B. a kind of illness which may make people die

C. a certain place in Indonesia

D. a certain medicine to deal with diseases

2.Cholera results from (由于……結(jié)果) ________.

A. Peru and Indonesia

B. the different peoples in the world

C. the different areas in the world

D. polluted water and polluted food

3.How to treat the people who have been caught by cholera?

A. By medicines and blood improvement.

B. By eating unpolluted food.

C. By drinking unpolluted water.

D. By taking them to a separated place.

4.The most effective way of avoiding cholera is ________.

A. seeing doctors as soon as possible

B. fighting against it

C. paying attention to the eating and drinking

D. taking vaccine immediately

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