【单选题】Chaga’s disease is caused by （）

(ii) Identify and explain the potential financial statement risks caused by the breach of planning regulations

discussed in the press cutting. (6 marks)

British cancer researchers have found that childhood leukaemia is caused by an infection, and clusters of cases around industrial sites are the result of population mixing that increases exposure. The research published in the British Journal of Cancer backs up a 1988 theory that some as-yet unidentified infection caused leukaemia—not the environmental factors widely blamed for the disease.

"Childhood leukaemia appears to be an unusual result of a common infection," said Sir Richard Doll, an internationally-known cancer expert who first linked tobacco with lung cancer in 1950. "A, virus is the most likely explanation. You would get an increased risk of it if you suddenly put a lot of people from large towns in a rural area, where you might have people who had not been exposed to the infection. "Doll was commenting on the new findings by researchers at Newcastle University, which focused on a cluster of leukaemia cases around the Sellafield nuclear reprocessing plant in Cumbria in northern England. Scientists have been trying to establish why there was more leukaemia in children around the Sellafield area, but have failed to establish a link with radiation or pollution. The Newcastle University research by Heather Dickinson and Louise Parker showed the cluster of cases could have been predicted because of the mount of population mixing going on in the area, as large numbers of construction workers and nuclear staff moved into a rural setting. "Our study shows that population mixing can account for the (Sellafield) leukaemia cluster and that all children, whether their parents are newcomers or locals, are at a higher risk if they are born in an area of high population mixing, "Dickinson said in a statement issued by the Cancer Research Campaign, which publishes the British Journal of Cancer.

Their paper adds crucial weight to the 1988 theory put forward by Leo Kinlen, a cancer epidemiologist at Oxford University, who said that exposure to a common unidentified infection through population mixing resulted in the disease.

Who first hinted at the possible cause of childhood leukaemia being infection?

A．Leo Kinlen.

B．Richard Doll.

C．Louise Parker.

D．Heather Dickinson.

Antibiotics have no effect on diseases caused by viruses.

A．Y

B．N

C．NG

A New Finding

British cancer researchers have found that childhood leukaemia is caused by an infection and clusters of cases around industrial sites are the result of population mixing that increases exposure. The research published in the British Journal of Cancer backs up a 1988 theory that some as yet unidentified infection caused leukaemia—not the environmental factors widely blamed for the disease.

“Childhood leukaemia appears to be an unusual result of a common infection,” said Sir Richard Doll, an internationally—known cancer expert who first linked tobacco with lung cancer in 1950. “A virus is the most likely explanation. You would get an increased risk of it if you suddenly put a lot of people from large towns in a rural area, where you might have people who had not been exposed to the infection.” Doll was commenting on the new findings by researchers at Newcastle University, which focused on a cluster of leukaemia cases around the Sellafield nuclear reprocessing plant in Cumbria in northern England. Scientists have been trying to establish why there was more leukaemia in children around the Sellafield area, but have failed to establish a link with radiation or pollution. The Newcastle University research by Heather Dickinson and Louise Parker showed the cluster of cases could have been predicted because of the amount of population mixing going on in the area, as large numbers of construction workers and nuclear staff moved into a rural setting. “Our study shows that population mixing can account for the (Sellafield) leukaemia cluster and that all children, whether their parents are incomers or locals, are at a higher risk if they are born in an area of high population mixing,” Dickinson said in a statement issued by the Cancer Research Campaign, which publishes the British Journal of Cancer.

Their paper adds crucial weight to the 1988 theory put forward by Leo Kinlen, a cancer epidemiologist at Oxford University, who said that exposure to a common unidentified infection through population mixing resulted in the disease.

Who first hinted at the possible cause of childhood leukaemia by infection?______

A．Leo Kinlen.

B．Richard Doll.

C．Louise Parker.

D．Heather Dickinson.

The difference between the starboard and port drafts caused by a transverse shift in weight is _____.

A.list

B.heel

C.trim

D.flotation

The study was means to examine how the brain reacts to electromagnetic fields caused by wireless phone signals.

What is one of the consequences caused by the many claims of household products?

A．They are likely to lead to serious environmental problems.

B．Consumers find it difficult to tell the true from the false.

C．They could arouse widespread anger among consumers.

D．Consumers will be tempted to buy products they don't need.

听力原文：The only reasonable solution to the sort of problems caused by the current unstable political situation is the use of the diplomacy and economic measures rather than the use of military force.

______

A.The problems caused by the Revolutionary War．

B.How some people became rich in the late l700s．

C.the importance of establishing a tax system in the Constitution．

D.Motives for creating the United States Constitution．

A．Ozone as a form. of oxygen.

B．Problems caused by the thinning of the ozone layer.

C．The origin of ozone problems.

D．The latest studies of ozone problems.