单选题Smaller enterprises have difficulty using foreign talent because of ______.A the costly recruiting process.B the expensive legal counsel.C the competition from big companies.D the inability to provide sponsorship.

根据下面资料，回答
Today, people all over the world are moving out of small villages in the country to go and live in big, noisy cities. They are moving from the peaceful hills, mountains, fields, rivers and streams of the countryside to the busy world of streets, buildings, traffic and crowds. This movement from rural areas to urban areas has been going on for over two hundred years.
In many countries, the main reason why people come to live in towns and cities is work. After one or two large factories have been built in or near a town, people come to find work, and soon an industrial area begins to grow. There is usually a residential area nearby, where the factory workers can live. The families of these workers need schools, hospitals and shops, so more people come to live in the area to provide these services and a city grows.
In every major city in the world, there is a business district where the big companies have their main offices. In the United States, this area is usually in the city centre. It is here that you can see the huge skyscraper office blocks. The people who work here often travel a long way to work each day. Many of them live in the suburbs of the city, far away from the industrial area and the city centre. Some suburbs are very pleasant, with nice houses and big gardens. There are usually parks for children to play in and large department stores where you can buy all you need.
But what is the future of the big cities? Will they continue to get bigger? Perhaps not. Some major cities have actually become smaller in the last ten years, and it is quite possible that one day we will see people moving out of the major cities and back into smaller towns and villages.
Why do people move to live in cities or towns?

A.Because they can live more comfortably there.
B.Because they prefer a noisy life to a peaceful life.
C.Because they want to find work.
D.Because they are sure of having a better life there.

共用题干
FDA : Human , Animal Waste Threatens Produce
The biggest food safety risk for fresh fruits and vegetables as they are grown,picked or processed comes from human and animal waste,the US Food and Drug Administration(FDA)said Friday.
More than 9,000 Americans die each year from food-borne diseases and some scientists believe fresh produce is the biggest carrier of contamination.
The FDA issued a set of draft guidelines for US and foreign growers to carefully monitor worker hygiene, water quality,manure management and transportation.
These 34-page draft guidelines urged growers to give workers lessons on basic hygiene such as using soap to wash their hands,covering wounds that could come into contact with produce,and using only clean toilets.
The FDA guidelines identified"the major source of contamination"for fresh produce as human or animal feces.
"We think just proper controls and proper attention to detail would make a big difference in food safety,"said an FDA official."It is our belief that these guidelines would not be very costly."
But grower groups disagreed with the FDA's assessment."Most food-borne disease outbreaks that happen further down the distribution line are due to contamination because people preparing food are not properly washing their hands,"said Stacey Zawal,an official with United Fresh Fruit and Vegetable Association."That is not necessarily true for growers and packers."
Some US grower organizations have expressed concern that the agency is interfering with on-farm practices.Others object to the FDA's proposal to have growers formally document the picking,handling and transportation of produce so that health officials could quickly recall foods if necessary.
Consumer groups criticized the FDA guidelines as of little use because they will not carry the force of law.But stricter regulations could evolve as researchers find new technology or methods to kill harmful bacteria or parasites,the FDA said.
The FDA recommendations are due to be made final by the FDA later this year for use by US and foreign growers.The matter of encouraging foreign growers to adopt the guidelines remains somewhat tricky but FDA officials say it is vital because of the huge amount of imported produce.

Consumer groups criticized the FDA guidelines because they didn't think that these.guidelines______.
A:had won enough support from the growers
B:had been written with strict regulations
C:would surely be carried out
D:included new technology

资料：Business,academic and civic leaders in Cambridge have warned that one of Britain’s major economic growth cities is under threat unless the government acts quickly to restore trust post-Brexit.
Company executives and educationists report some highly skilled foreign nationals quitting or refusing to commit to new jobs in Britain because of uncertainty over their future legal status here.It has in the past boasted of creating employment faster than China,amid a boom in the technology and bioscience sectors,which led to the city being labelled”Sillicon fen”,but now there are fears of a big slowdown.
“This is a unique economic asset for Europe,”said Lord Lansley,the former Conservation MP for South Cambridgeshire, after a specially convened meeting to discuss the problems with local politicians and others.”There is a [ political]vacuum out there and there does not seem to be a [ post Brexit] plan.There are things we need and if we get them we can continue to prosper and be more successful”,Lansley added.
He has drawn up a Cambridge declaration with his colleagues meant to reassure existing academic and business staff from abroad that their presence will be protected .”We are committed to international collaboration in research,science and the exploitation of innovative,knowledge-intensive enterprises,”says the document.
Lansley says he will be pushing the British government to give acquired rights to the 9,000 European citizens living in the East Anglian city out of a total population of 124,000.He also wants to see a continuation of free labour movement to allow Europeans to come to work and study in Cambridge and says”We need free movement for them to come to work and to study here.”

Why do these skilled foreign nationals choose not to work in Britain?

A.Because of the uncertainty
B.Because the economic slowdown after Britian leaving the EU
C.Because the increasing,difficulty of finding of finding a job in Britain
D.Because they may lose legal status after Brexit

共用题干
FDA : Human , Animal Waste Threatens Produce
The biggest food safety risk for fresh fruits and vegetables as they are grown,picked or processed comes from human and animal waste,the US Food and Drug Administration(FDA)said Friday.
More than 9,000 Americans die each year from food-borne diseases and some scientists believe fresh produce is the biggest carrier of contamination.
The FDA issued a set of draft guidelines for US and foreign growers to carefully monitor worker hygiene, water quality,manure management and transportation.
These 34-page draft guidelines urged growers to give workers lessons on basic hygiene such as using soap to wash their hands,covering wounds that could come into contact with produce,and using only clean toilets.
The FDA guidelines identified"the major source of contamination"for fresh produce as human or animal feces.
"We think just proper controls and proper attention to detail would make a big difference in food safety,"said an FDA official."It is our belief that these guidelines would not be very costly."
But grower groups disagreed with the FDA's assessment."Most food-borne disease outbreaks that happen further down the distribution line are due to contamination because people preparing food are not properly washing their hands,"said Stacey Zawal,an official with United Fresh Fruit and Vegetable Association."That is not necessarily true for growers and packers."
Some US grower organizations have expressed concern that the agency is interfering with on-farm practices.Others object to the FDA's proposal to have growers formally document the picking,handling and transportation of produce so that health officials could quickly recall foods if necessary.
Consumer groups criticized the FDA guidelines as of little use because they will not carry the force of law.But stricter regulations could evolve as researchers find new technology or methods to kill harmful bacteria or parasites,the FDA said.
The FDA recommendations are due to be made final by the FDA later this year for use by US and foreign growers.The matter of encouraging foreign growers to adopt the guidelines remains somewhat tricky but FDA officials say it is vital because of the huge amount of imported produce.

An FDA official said that putting the guidelines into practice_.
A:would be too costly to be effective
B:would not cost any money
C:would not be very expensive
D:would need lots of money

共用题干
FDA : Human , Animal Waste Threatens Produce
The biggest food safety risk for fresh fruits and vegetables as they are grown,picked or processed comes from human and animal waste,the US Food and Drug Administration(FDA)said Friday.
More than 9,000 Americans die each year from food-borne diseases and some scientists believe fresh produce is the biggest carrier of contamination.
The FDA issued a set of draft guidelines for US and foreign growers to carefully monitor worker hygiene, water quality,manure management and transportation.
These 34-page draft guidelines urged growers to give workers lessons on basic hygiene such as using soap to wash their hands,covering wounds that could come into contact with produce,and using only clean toilets.
The FDA guidelines identified"the major source of contamination"for fresh produce as human or animal feces.
"We think just proper controls and proper attention to detail would make a big difference in food safety,"said an FDA official."It is our belief that these guidelines would not be very costly."
But grower groups disagreed with the FDA's assessment."Most food-borne disease outbreaks that happen further down the distribution line are due to contamination because people preparing food are not properly washing their hands,"said Stacey Zawal,an official with United Fresh Fruit and Vegetable Association."That is not necessarily true for growers and packers."
Some US grower organizations have expressed concern that the agency is interfering with on-farm practices.Others object to the FDA's proposal to have growers formally document the picking,handling and transportation of produce so that health officials could quickly recall foods if necessary.
Consumer groups criticized the FDA guidelines as of little use because they will not carry the force of law.But stricter regulations could evolve as researchers find new technology or methods to kill harmful bacteria or parasites,the FDA said.
The FDA recommendations are due to be made final by the FDA later this year for use by US and foreign growers.The matter of encouraging foreign growers to adopt the guidelines remains somewhat tricky but FDA officials say it is vital because of the huge amount of imported produce.

The last paragraph suggests that_.
A:some tricks need to be adopted to encourage foreign growers to follow the FDA guidelines
B:a good way should be found to encourage foreign growers to follow the FDA guidelines
C:foreign growers consider the guidelines to be of great importance to them
D:it is almost impossible to ask foreign growers to follow the guidelines

共用题干
Natural Medicines
Since earliest days,humans have used some kinds of medicines.We know this because humans have survived.Ancient treatments for injury and disease were successful enough to keep humans from dying out completely.
They were successful long before the time of modern medicine. Before the time of doctors with white coats and shiny（发亮的）instruments. Before the time of big hospitals with strange and wonderful equipment.
Many parts of the world still do not have university-educated doctors. Nor do they have expensive hospitals.Yet injuries are treated.And diseases are often cured.How?By ancient methods. By medicines that might seem mysterious , even magical（有魔力的）.Traditional medicines are neither mysterious nor magical,however.
Through the centuries , tribal（部落的）medicine men experimented with plants. They found
many useful chemicals in the plants.And scientists believe many of these traditional medicines
may provide the cure for some of today's most serious diseases.
Experts say almost 80% of the people in the world use plants for health care.These natural medicines are used not just because people have no other form of treatment. They are used because people trust them. In developed areas,few people think about the source of the medicines they buy in a store .Yet many widely-used medicines are from ancient sources,especially plants.
Some experts say more than 25%of modem medicines come,in one way or another,from nature.
Scientists have long known that nature is really a chemical factory. All living things contain chemicals that help them survive .So scientists' interest in traditional medicine is not new.But it has become an urgent concern.This is because the earth's supply of natural medicines may be dropping rapidly.

Which of the following statements is NOT true?
A: Modern medicines are now available all over the world.
B: Many big and modern hospitals are expensive.
C: Traditional medicines are neither mysterious nor magical.
D: Humans have used some kinds of medicines since earliest days.