The findings come ___36___ a study of nearly 1,000 US people that looked at diet, calorie intake and body mass index (BMI) - a measure of obesity.___37___ is found that those who ate chocolate a few times a week were, on ___38___, slimmer than those ___39___ ate it occasionally. Even though chocolate is loaded with calories, it contains ingredients（材料）that may favour weight loss ___40___ than fat synthesis, scientists believe.___41___ boosting calorie intake, regular chocolate consumption was related to lower BMI in the study, ___42___ is published in Archives of Internal Medicine. The link remained even when other factors, like how ___43___ exercise individuals did, were taken into ___44___.And it appears it is how often you eat chocolate that is important, rather than how much of it you eat. The ___45___ found no link with quantity consumed.
___46___ to the researchers, there is only one chance in a hundred that their findings could be explained by chance alone. Lead author Dr Beatrice Golomb, from the University of California at San Diego, said: "Our findings appear to add to a body of information suggesting that the composition of calories, not just the number of them, matters for determining their ultimate impact on weight."This is not the first time scientists ___47___ that chocolate may be healthy for us. Other studies have claimed chocolate may be good for the heart. Consumption of certain types of chocolate has been linked to some favourable changes in blood pressure, insulin（胰岛素）sensitivity and cholesterol（胆固醇）level. And chocolate, ___48___ dark chocolate, does contain antioxidants（抗氧化剂）which can help to mop up harmful free radicals - unstable chemicals that can damage our cells.
Dr Golomb and her team believe that antioxidant compounds, called catechins（儿茶素）, can improve lean muscle mass and reduce weight  ___49___ studies in rodents would suggest this might be so. Mice ___50___ for 15 days with epicatechin (present in dark chocolate) had improved exercise performance and observable changes to their muscle composition.They say clinical trials are now needed in humans to see ___51___ this is the case.
But before you reach ___52___ a chocolate bar, there are still lots of unanswered questions. And in the absence of conclusive evidence, experts advise caution.While there's no harm in allowing yourself a treat like ___53___ now and again, eating too much might be harmful because it often ___54___ a lot of sugar and fat too.And if you are looking to change your diet, you are ___55___ to benefit most from eating more fresh fruits and vegetables.

 The United Nations is warning that the world is not prepared to deal with the fast growth of cities. The World Economic and Social Survey 2013 calls for new ways to meet the needs of city populations. More than 6.5 billion people are expected to be living in cities by 2050.

Most new city dwellers will be in developing countries. The United Nations says the effect on limited resources in many countries will be huge. The World Economic and Social Survey points to the increasing demand for energy, water, sanitation, public services, education and health care.

The world population is expected to rise to more than nine billion by 2050, two-thirds of all people are expected to live in cities. The United Nations says about 80 percent of this growing urban population will be found in Africa and Asia.

The report says sustainable development of urban areas requires coordination and investments to deal with important issues, these include land-use, food security, job creation and transportation.

Willem Van Der Geest is with the United Nations Department of Economic and Social Affairs, he says cities need to work closely with rural communities, so that food supplies can be secured, and the environment can be protected.

"We need enough integration(整合，融合) with cities... An integration between the rural and urban economies is absolutely vital for issues of nutrition, food security, and environmental sustainability."

The report says development in a sustainable（可持续发展）way is important to end poverty. The report also examines the problem of food insecurity, which affects hundreds of millions of people around the world. One in eight people still severely lack nutrition.

UN officials say some things are clear. The Assistant Secretary-General for Economic Development, Shamshad Akhtar, says world food production will have to increase by 70%, that increase will be needed to feed the additional 2.3 billion people expected on the planet by the middle of the century. She says an important part of meeting that need is to waste less food. "There has to be efforts to reduce food wastage. ."

Food and nutrition security are core elements of the sustainable development agenda.

1.The survey includes the following statements except that ______.

A. varieties of demands are hard to meet because of the increasing population in Africa and Asia.

B. one way to put an end to poverty is to be able to develop for a long time.

C. transportation is an important issue to deal with when it comes to sustainable development of urban areas.

D. hundreds of millions of people around the world are affected by the problem of food insecurity.

2.From the passage we can infer that ______.

A. cities grow so fast that the world can’t find out new ways to deal with the growing population.

B. the growing city dwellers who mainly come from the developing countries greatly challenge limited resources in the world.

C. sustainable development of urban areas requires coordination and investments to deal with important issues

D. food wastage is an effective way to feed the additional 2.3 biilion people by the middle of the century.

3.What is the best titile of the passage?

A. The World Economic and Social Survey 2013.

B. City Population Will Increase to 9 Billion.

C. Cities Need to Cooperate with Rural Areas.

D. The World Is Not Prepared to Deal with the Fast Growth of Cities.

4.The passage is chosen from ______.

A. a textbook              B. a travel guide                  C. a novel                  D. a newspaper

The findings come ___36___ a study of nearly 1,000 US people that looked at diet, calorie intake and body mass index (BMI) - a measure of obesity.___37___ is found that those who ate chocolate a few times a week were, on ___38___, slimmer than those ___39___ ate it occasionally. Even though chocolate is loaded with calories, it contains ingredients（材料）that may favour weight loss ___40___ than fat synthesis, scientists believe.___41___ boosting calorie intake, regular chocolate consumption was related to lower BMI in the study, ___42___ is published in Archives of Internal Medicine. The link remained even when other factors, like how ___43___ exercise individuals did, were taken into ___44___.And it appears it is how often you eat chocolate that is important, rather than how much of it you eat. The ___45___ found no link with quantity consumed.

___46___ to the researchers, there is only one chance in a hundred that their findings could be explained by chance alone. Lead author Dr Beatrice Golomb, from the University of California at San Diego, said: "Our findings appear to add to a body of information suggesting that the composition of calories, not just the number of them, matters for determining their ultimate impact on weight."This is not the first time scientists ___47___ that chocolate may be healthy for us. Other studies have claimed chocolate may be good for the heart. Consumption of certain types of chocolate has been linked to some favourable changes in blood pressure, insulin（胰岛素）sensitivity and cholesterol（胆固醇）level. And chocolate, ___48___ dark chocolate, does contain antioxidants（抗氧化剂）which can help to mop up harmful free radicals - unstable chemicals that can damage our cells.

Dr Golomb and her team believe that antioxidant compounds, called catechins（儿茶素）, can improve lean muscle mass and reduce weight  ___49___ studies in rodents would suggest this might be so. Mice ___50___ for 15 days with epicatechin (present in dark chocolate) had improved exercise performance and observable changes to their muscle composition.They say clinical trials are now needed in humans to see ___51___ this is the case.

But before you reach ___52___ a chocolate bar, there are still lots of unanswered questions. And in the absence of conclusive evidence, experts advise caution.While there's no harm in allowing yourself a treat like ___53___ now and again, eating too much might be harmful because it often ___54___ a lot of sugar and fat too.And if you are looking to change your diet, you are ___55___ to benefit most from eating more fresh fruits and vegetables.

Today the car is the most popular sort of transportation in all of the United States.It has completely 1 the horse as a 2 of everyday transportation.Americans use their car for 3 90% of all 4 business.Most Americans are able to 5 cars.The average price of a 6 made car was ,050 in 1950, ,470 in 1960 and up to ,750 7 1975.During this period American car manufacturers set about 8 their products and work efficiency.As aresult, the yearly income of the 9 family increased from 1950 to 1975 10 than the price of cars.For this reason 11 a new car takes a smaller 12 of a family?s total earnings today.In 1951 13 it took 8.1 months of an average family?s 14 to buy a new car.In 1962 a new car 15 8.3 of a family?s annual earnings, by 1975 it only took 4.75 16 income.In addition, the 1975 cars were technically 17 to models from previous years.The 18 of automobile extends throughout the economy 19 the car is so important to American.Americans spend more money 20 keeping their cars running than on any other item.

1.A.denied B.reproduced C.replaced D.ridiculed

2.A.means B.mean C.types D.kinds

3.A.hardly B.nearly C.certainly D.somehow

4.A.personal B.personnel C.manual D.artificial

5.A.buy B.sell C.race D.see

6.A.quickly B.regularly C.rapidly D.recently

7.A.on B.in C.before D.after

8.A.raising B.making C.reducing D.improving

9.A.unusual B.smallest C.average D.biggest

10.A.slower B.equal C.faster D.less

11.A.bringing B.obtain C.bought D.purchasing

12.A.part B.half C.number D.quality

13.A.clearly B.proportionally C.percentage D.suddenly

14.A.income B.work C.plans D.debts

15.A.used B.spent C.cost D.needed

16.A.month?s B.year?s C.family D.year

17.A.famous B.superior C.fastest D.better

18.A.running B.notice C.influence D.affect

19.A.then B.as C.so D.which

20.A.to B.in C.of D.for

Read the following text and choose the most suitable heading from A – F for each paragraph. There is one extra heading which you do not need.

1．       

    The cost of transporting water is determined largely by how far it has to be carried and how high it has to be lifted. Growing cities and towns may have to go hundreds of kilometers to find the water needed to satisfy their increasing thirst. California cities have long imported water from hundreds of kilometers away. And China is constructing three canals that are 1,156 kilometers, 1,267 kilometers, and 260 kilometers long to transfer water from the Yangtze River to Beijing and other rapidly growing areas in the northern provinces.

2．        

Pumping water out of the ground or over land to higher elevations is energy-intensive. Pumping 480 cubic meters of water a height of 100 meters requires some 200 kilowatt-hours of electricity. At a price of 10¢ per kilowatt-hour, the cost is $20—not including the cost of the pump, the well, and the piping. One hundred meters is not an unusual lift for wells tapping falling supplies of groundwater. In Beijing and other areas in northern China, for instance, lifts of 1,000 meters are sometimes required.

3．         

In most places water is not purchased or exchanged in a market. But formal water markets are developing in the western United States, Australia, and Chile. Where these water markets do exist, they provide examples of how high the scarcity value of the water—that is, the amount that other potential users would be willing to pay for it—can be. Water prices in Australia’s markets peaked at near 75¢ per cubic meter in December 2006, climbing 20-fold in a year in part due to prolonged drought. In the U.S. West, water prices typically range between 3 cents and 10 cents per cubic meter.

4．         

In India, water scarcity has prompted some farmers to profit by selling their water instead of farming. The water they formerly used to irrigate their crops is instead pumped from their wells and trucked to nearby cities. The farmers are harvesting water rather than food and at the same time promoting a rapid drop in underground water tables.

5．          

Another factor affecting how much people pay for water is the amount it is subsidized （补助）. Water subsidies can be very large. For instance, water revenues in the city of Delhi are less than 20 percent of what it spends each year to provide water. On average worldwide, nearly 40 percent of municipal suppliers do not charge enough for water to meet their basic operation and maintenance costs.