题目内容
Most poisons are ________one's body．Be careful of them！
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解析：
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用短语be harmful to sb．／sth． |
教材全解字词句篇系列答案Healthy Diet“An apple a day keeps the doctor away.” Similarly, if we drink a little more water ever day, we may find that we need to go to the doctor a lot less often. A healthy diet is made up of water and a great many different kinds of foods. We know that healthy foods like fruits, vegetables and fish, are important as they provide us with energy and fibre, without giving us too much fat and sugar. But why is water important?
The human body needs water to survive. Water is important as it carries poisons and waste out of our bodies. However, doctors advise us to drink plenty of water, much more than the small amount we need to stay alive.
Some doctors believe that water is important for our health in all kinds of ways. They believe that a great many illnesses and health problems stars as a result of dehydration—a lack(缺少) of water in the body. Most people are dehydrated at least some of time, although they probably don’t know it. It is surprising to learn that if we feel thirsty, we are already in the first stages of dehydration. In fact, we are advised to drink water before we feel thirsty.
These doctors think that health problems such as headaches, high blood pressure and asthma could be helped if people drink more water. They also believe that drinking more water can help people who are overweight. Water contains no calories so it will not make us put on weight. If we drink water, we will probably drink less sugary soft drinks such as Coca-cola. Doctors also believe that drinking more water may stop people from overeating. They say that many people think that they are hungry when they are, in fact, thirsty. Doctors suggest, therefore, that we eat less food and drink more water.
There are still many health problems that cannot be solved by drinking water, so we should not stop going to seeing the doctor completely. However, if we make a decision to drink water every day, we may find that we need to go to the doctor a lot less often.
【小题1】We need _____for a healthy diet.
| A．fibre | B．food | C．water | D．Water and different foods |
| A．energy and fibre in our bodies |
| B．fruit, vegetables and fish in our bodies |
| C．sugar and fat out of our bodies |
| D．poisons and waste out of our bodies |
| A．people eat too much sugar |
| B．water is not important for our health |
| C．we should go to the doctor less often |
| D．some health problems are caused by a lack of water |
| A．they think they are hungry and eat too much |
| B．they think they are thirsty and eat less |
| C．water has no calories |
| D．it makes them hungry |
Food sometimes gets poisoned with harmful things. A person who eats such food can get an illness called food poisoning(中毒). 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.
【小题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. |
| A．are always accompanied by a fever | B．are too common to be noted |
| C．can be noticed within hours | D．can he ignored |
| A．some chemicals | B．low temperatures |
| C．some tiny living things | D．certain natural materials |
| 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 |
| 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 |