17、 the most people each dayBis the worlds largestCmay be larger than the Chicago “L” in the futureDis the busiest in the world8How many subways carry more than 5 million people per day?A2B3C4D5COrganic food is very popular. It is also expensive. Some organic food costs twice as much as nonorganic food 。

18、. Some parents and pet owners pay up to 200 percent more for organic food while some people think organic food is a waste of money.There is one main difference between organic and nonorganic food. Organic farmsdo not use agricultural chemicals, such as pesticides (杀虫剂). This guarantees that the prod 。

19、ucts are natural.Some people think “organic” means “locally grown”. Originally this was true.Over time organic farming became more difficult. The demand for organic food grew larger than the supply. Small companies had to sell out to large companies. There werent enough organic materials. This made。

20、it difficult for many organic companies to stay in business. Today, many large companies have aonrganic line of products.Is organic food more nutritious (有营养的)? This is part of the debate. Many farmers and consumers (消费者) believe it is. They think agricultural chemicals cause health problems, such a 。

21、s cancer. Many health professionals disagree. Few studies prove that organic food prevents health problems. Health specialists worry more about bacteria. These can come into contact with organic and nonorganic food. Doctors recommend washing produce very carefully.Most people agree that naturallygro 。

22、wn food tastes better. Is tastier food worth the extra money? This is a matter of opinion. Whether it is healthier or not may require more research. However, organic consumers argue it is better to be safe than sorry.9In Paragraph 3, the author points out that. Amost organic food is locally grown no 。

23、wadaysBorganic farming once experienced a difficult periodCorganic food tastes better than nonorganic foodDorganic companies find it difficult to earn money10We can learn from the passage that health experts. Abelieve organic food prevents health problemsBconsider organic food a waste of moneyCdont。

24、share many consumers views Drecommend eating organic food11In many organic consumers opinion, organic food is better for the following reasons EXCEPT.Abeing healthierBbeing more beautiful Cbeing tastierDbeing more nutritious12The author develops the passage mainly by. Aproviding some examplesBfollow 。

25、ing the natural time orderCcomparing opinions from different fields Dshowing a cause and then its effectsOne afternoon Peter and Jim went out for a bicycle ride. When they passed a place they saw a large area of grass and bushes on fire and a strong wind was blowing the flames towards avillage. The。

26、firemen had already arrived and were trying toDput out the fire. The boys left their bicycles and ran towards the village to see if they could help to fight the fire. On the way they met two firemen.“Quick, you boys ， ” said one of the firemen. “Come and help us to pull a pump (泵) to the stream. We ca 。

27、nt beat out the fire. The wind is too strong. The pump is our only hope.”The two boys ran further until they came to a heavy pump. They helped to pull it to a stream not far from the village.Soon the pump was working well so the boys went to watch the fire. It had already reached the edge of the vil 。

28、lage. The boys saw that two houses were on fire, and the flames were attacking a third building. Suddenly there was a shout from one of the villagers.“Keep away！” a voice shouted. “Theres paint stored in that building.”Theboys and villagers moved away quickly. With a loud explosion 爆( 炸), the wholeb 。

29、uilding burst into flames, sending clouds of thick black smoke into the sky.At this time Peter and Jim began to think that the whole village would be burnt to the ground.The firemen had left the burning buildings and were pouring浇() water onto the neighboring houses, trying to stop the fire from spr 。

30、eading. Then the wind died down. A second pump was brought up to help, and the fire was gradually put out.“Its soon finished ， ”Peter said to his friend. “We must go or we shall get home late.” “Yes, come on ， ” agreed Jim, and with a last look at the ruins, they walked back to their bicycles.13Seeing t 。

31、he fire, the boys ran to the village to. Awatch itBask for helpChelp the firemenDwarn the villagers14The villagers were told to keep away from the fire mainly because. Atheir help was unnecessaryBit was spreading very rapidlyCtwo burning buildings were falling downDone of the buildings stored a lot。

32、of paint15The firemen tried to stop the fire from spreading by. Ausing an airplaneBusing more fire enginesCpulling down the burning housesDpouring water onto the neighboring houses .任务型阅读What causes a flood?Floods are one of the most common disasters in the United States.Flood effects can be local,。

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标题：单元|单元仿真检测(二)_Unit_2_Working_the_land( 二 )