Irradiating fruits, vegetables, pork and chicken to kill insects and
bacteria has been approved by the Food and Drug Administration over the past
decade or so. Irradiation of other meats, such as beef and lamb, is being
reviewed. Federal approval does not require that industry adopt the process, and
few food processors presently offer irradiated products. Market
studies have shown that many consumers are afraid that eating irradiated foods
may cause cancer, despite scientific studies that prove the safety of treated
foods. Some people argue that more severe government inspection, higher
food-safety standard and more careful-preparation practices by consumers are all
that is needed to ensure that food is safe. Consequently, companies currently
see no need to spend millions of dollars outfitting processing plants with the
equipment necessary for a process that very few shoppers are in favor
of. All supermarkets that sell irradiated food must label the
food either directly on the packaging, or, in the case of bulk items like fruits
and vegetables, by placing a sign nearby. There is no requirement for the
labeling of irradiated food served by chain restaurants or hospitals that buy
directly from distributors, nor any regulations for products that contain
irradiated ingredients. Presently, the FDA allows food to be
treated with three types of radiation -- gamma rays (伽马射线), high-energy
electrons, and X rays -- and sets limits on doses, depending on the type of
food. The principle is that the dose to be used for a certain type of food
should not exceed the amount that is sufficient to kill most harmful insects and
bacteria present in it. Different types of food, because of their molecular
compositions, may require different doses of
radiation.
单选题
Killing insects and bacteria present in foods by irradiating is completely approved by the US government.
【正确答案】
B
【答案解析】[解析] 关键词是approve和US government。依据此关键词，可在文中第一段找到相关叙述：Irradiating fruits, vegetables, pork and chicken to kill insects and bacteria has been approved by the Food and Drug Administration over the past decade. Irradiation of other meats, such as beef and lamb, is being reviewed.由being reviewed可推测出，通过辐照去除食物中的害虫和细菌并没有完全通过批准，故此题为“错误”的。
单选题
A great many food processors produce irritated foods.
单选题
Many consumers suspect the safety of irradiated foods and suggest the government inspect them severely .
【正确答案】
A
【答案解析】[解析] 关键词是safety和government inspect。依据此关键词，可在文中第一段找到相关叙述：Some people argue that more severe government inspection,...are all that is needed to ensure that food is safe，故此题为“正确”的。
单选题
Some companies foresee the bankruptcy of food processing factories.
单选题
Irradiated fruits and vegetables do not need to be labelled.
【正确答案】
B
【答案解析】[解析] 关键词是Irradiated fruits and vegetables和labelled。依据此关键词，可在文中第三段找到相关叙述：in the case of bulk items like fruits and vegetables, by placing a sign nearby，由此可知像蔬菜和水果这样的散装食品也应在旁边标注出辐照食品的字样，故此题为“错误”的。
单选题
Restaurants can serve irradiated food bought directly from distributors without labeling it.
【正确答案】
A
【答案解析】[解析] 关键词是Restaurants、distributors和without labeling，依据这些关键词，可在文中第三段找到相关叙述：There is no requirement for the labeling of irradiated food served by chain restaurants or hospitals that buy directly from distributors，故此题为“正确”的。
单选题
According to the passage, FDA approves irradiating food to some extent but irradiated food is not widely accepted.
【正确答案】
A
【答案解析】[解析]这道题是有关文章主题的题，借助文章的结尾：Presently, the FDA allows food to be treated with three types of radiation(与approves irradiating food to some extent呼应)，而文章开头的句意也与该问题句的说法一致。第二段第一句提到many consumers are afraid that eating irradiated foods may cause cancer，由此可见辐照食品还没有被广泛接受，故此题的答案为“正确”的。