chemicals are not necessary for preserving food
a small quantity of bacteria in food is good to people
those chemicals that kill bacteria may not be good to people
there are other better ways to preserve food
第1题：
28． The number of listeners is becoming larger because
__________．
A． the radio is easy to carry
B． the radio is good for blind people and many old people
C． the radio can be used at any time
D．A，B and C
第2题：
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
由文中第五段第一句话可推测出C正确
第3题：
A.Because people do not realize the harmfulness of it.
B.Because contaminated food products are easy to produce and sell.
C.Because those food manufacturers only focus on making money.
第4题：
Biological treatment may use __ to treat sewage (1)living organisms (2)chemicals (3)additives
A.(1)
B.(2)
C.(3)
D.(1)(2)(3)
第5题：
–– Marily: Don’t like to eat Korean food?
–– Robbie:______
A: No, Korean food is not real to my taste.
B: No, because Korean food is very good.
C: No, I prefer to have Chinese noodles.
D: No, I like very much to Korean food.
第6题：
C
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.
51. 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.
第7题：
The inhABitants in the three places famous for longevity have similarities, including ()
A、Food without chemicals.
B、They live on agriculture
C、They live far away from the cities.
D、They drink large amounts of alcohol.
第8题：
Why does it take long for people to change their food?
A． Because labs are not easily accessible to researchers.
B． Because some people are reluctant to accept the new diet.
C． Because food consumption is a culture of conservation.
D． Because some scientists are against the growing lab meat.
第9题：
Processed food and food______ contains chemicals and preservatives should be avoided.
A、when
B、where
C、which
D、who
第10题：
B
Breakfast is very important． It- s one of the most important meals of the day． To build strong bodies and keep healthy, everyone should always eat a good breakfast． Eating the right food is needed for good health． We may have eggs, bread, milk, etc．for our breakfast．
Many fathers and mothers don-t get their children to eat breakfast because they don't have breakfast themselves． It-s bad for their health．
Without breakfast children may not grow as fast as they should and may not study and play as well in school in the morning as they could． They can be often ill, and when they're ill, it may take them longer to be in good health again than it takes children with good health habits．
Without food the body will stop working． Nobody will live without food．
( )26．If we eat a good breakfast,________
A． we’ll be happy in the morning
B． we’ll make our bodies strong and keep healthy
C． we’ll eat less for lunch
D． we’ll pass the exam