Question

Food sometimes gets poisoned with harmful things. A person who eats such food can get an illness called food poisoning. Food poisoning is usually not serious, but some types are deadly. The symptoms of food poisoning usually begin within hours of eating the poisoned food. Fever is one of the most common symptoms.

Certain microorganisms（微生物）cause most types of food poisoning. Bacteria and other microorganisms can poison eggs, meat, vegetables, and many other foods. After entering the body, these tiny living things release（释放）poisons that make people sick.

Some chemicals can also cause food poisoning. They are often added to food while it is being grown, processed, or prepared. For example, many farmers spray chemicals on crops to kill weeds and insects. Some people may have a bad reaction to those chemicals when they eat the crops.

Some plants and animals contain natural poisons that are harmful to people. These include certain kinds of seafood, grains, nuts, seeds, beans, and mushrooms.

When people handle food properly, the risk of food poisoning is very small. Microorganisms multiply rapidly in dirty places and in warm temperatures. This means that people should never touch food with dirty hands or put food on unwashed surfaces. Food should be kept in a refrigerator to stop microorganisms from growing. Meat needs to be cooked thoroughly to kill any dangerous microorganisms. People should also wash food covered with chemicals before eating it. Finally, people should not eat wild mushrooms or other foods that grow in the wild. Some of these foods may contain natural materials that are poisonous to humans. In addition, some types of fish can be poisonous.

Most people recover from food poisoning after a few days of resting and drinking extra water. If people eat natural poisons, they must go to the hospital right away to have their stomachs emptied.

1.Which of the following statements is NOT true?

A. Food when poisoned can make people sick.

B. Food poisoning means death.

C. Food poisoning comes in varieties.

D. Food poisoning can be serious.

2.We know from the passage that the symptoms of food poisoning         .

A. are always accompanied by a fever

B. are too common to be noted

C. can be noticed within hours

D. can be ignored

3.Food poisoning can be caused by all the following EXCEPT        .

A. some chemicals

B. low temperatures

C. some tiny living things

D. certain natural materials

4.From Paragraph 5, we can learn that         .

A. mushrooms should not be eaten

B. vegetables are safer than meat and seafood

C. natural poisons are more dangerous than chemicals

D. different types of food should be handled differently

5. It can be inferred from the passage that        .

A. natural materials are safe in food processing

B.chemicals are needed in food processing

C.food poisoning can be kept under control

D. food poisoning is out of control

Answer

1.B

2.C

3.B

4.D

5.C

【解析】

试题分析：文章介绍了食品中毒的症状，原因以及教读者怎样储存食物避免变质和导致食品中毒。

1.B考查事实细节分析理解，由第一段中Food poisoning is usually not serious, but some types are deadly.可知食物中毒通常不严重，但有些是可能致死的，故选B。

2.C细节理【解析】
由第一段The symptoms of food poisoning usually begin within hours of eating the poisoned food.可知中毒的症状通常发生在吃了有毒食品数小时内，选C

3.B事实细节，由第五段Food should be kept in a refrigerator to stop microorganisms from gnawing.食物应放在冰箱里面，防止微生物污染，可知较低的温度不会导致食物被毒害，故选B项。

4.D推断题，根据第五段提到对于不同的食物有不同的处理方法，处理得当毒性就会变得很小，故选D项。

5.C 推断题。由第五段When people handle food properly, the risk of food poisoning is very small.当人们正确处理食品时，食物的毒性就会变得很小，故选C项。