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 he 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

Those farmers who _________ move from place to place with their animals in the past have moved into new houses at last.

A. could                B. might         C. would                     D. should

 When the farmers dug the well, they _____ a large collection of ancient china.

A. came by                               B. came around                 C. came up              D. came across

As China becomes increasingly urbanized (城市化), it has to find space for its urban and

rural citizens as both groups become increasingly integrated. Experts suggest a possible model

way may be “re-inventing” a “garden city”.

   China’s mega-cities are bursting at the borders and the country is now undergoing the quickest and biggest urbanization in the history of mankind. It is estimated that by 2025, China will have 400 million more people living in its cities, raising its urban population to 900 million. Besides, new satellite towns are mushrooming on the urban fringes while city ring roads are rippling outwards into the countryside at amazing speed. Satellite maps collected by Professor Joshua Bolchover at the University of Hong Kong bring the problem sharply into focus. They track the changing rural-urban framework in the past 30 years, and suggest that cities are cruelly destroying surrounding rural land and rapidly reducing the amount of arable（可耕种的）land, which gives way to new residential blocks, new industrial zones, new financial centers and the other inevitable signs and signatures of economic growth.

   This, however, is not sustainable growth pattern, especially when China has the world’s largest population to feed. So concerned urban planners are starting to note the social and physical effects of diaspora（大移居）when replaced rural communities are forced into the cities.

   On the other hand, a trend of thought is gradually taking shape and this is the concept of the “garden city”, a combination of country and city that is being proposed by architects and city planners. Hua Li, from Tao Architects, is among the many professionals with such a voice. His argument is supported by a long-term study on this subject. As Hua says, the answer is to preserve patches of productive farmland within urban boundaries. Less transportation means we have fresh agricultural products at lower costs and less carbon emission in the city. And urban farmland can also be showcased for agricultural tourism and education.

   The concept is already practiced at the grassroot level. Agriculture has gone into the air, up to roof and balcony in some communities in the cities. It’s common to see organic “hanging garden” on the roof of some traditional courtyard home. According to some people, the rooftop project translate to tangible (= practical) benefits, such as safe, nutritious vegetables, a cooler home in summer. Some say thanks to the tomatoes they plant that are natural insect killers, there’re fewer mosquitoes. Apart from these, it also contributes to better bonding with neighbors. Zhang, a doctor in Beijing, began creating his hanging garden five years ago. Since his garden became home to 30 kinds of vegetables and fruit --- all enough to feed his family, neighbors have enjoyed dropping by for a relaxing chat or just to see how well the lovely vegetables and fruit are doing.

   Although people like Zhang are still rare and the greening of roof space with vegetables and fruit takes skill and energy, with more positive media exposure and advanced technology there is the prospect that garden city will become common practice in the near future. By then, cities will no longer look so gray when seen from the satellites.

1.What is the purpose of paragraph 2?

   A. To show the experts’ concern about the increase of population.

   B. To persuade people into supporting economic growth in cities.

   C. To explain the reasons for the change of rural-urban framework.

   D. To inform the readers of the consequences of quick urbanization.

2.In Hua Li’s opinion, a combination of country and city will __________.

   A. benefit the environment and lower living costs

   B. become a project that needs a long-term study

   C. lead to more rural communities being replaced

   D. attract more farmers to take tours in cities

3. Zhang is mentioned (Paragraph 5) to show that __________.

A. he achieves his dream to own a hanging garden

B. hanging gardens are becoming more popular

C. the garden contributes to a better neighborhood

D. he is a pioneer to practise the gardening concept

4.As for the concept of the “garden city”, the writer feels_________.

   A. desperate      B. hopeful         C. disappointed        D. concerned

The farmers were busy getting in the rice in the field, only ______ for a drink once in a while.