搜索
单选题

共用题干 第一篇

irradiating(照射)fruits, vegetable, 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 dose 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 food may cause cancer,despite scientific studies that prove the safety of treated food.Some people argue that more severe government inspection,higher food-safety standards,and more careful food-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(配备)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 that 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一gamma rays,highenergy electrons,and X-rays,and sets limits on doses(辐射量)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 different molecular(分子)compositions,may require different doses of radiation.

A. Which of the following best reflects the content of the passage?A:Although FDA does not approve irradiated food,consumers accept irradiated food.

B. Neither FDA approves irradiated food,nor do consumers accept irradiated food.

C. FDA approves irradiated food to some extend,but irradiated food is not widely accepted.

D. Both FDA and consumers think that irradiated food is not safe.

E. Both FDA and consumers think that irradiated food is not safe.

查看答案
更多相关题目
热门题目
They relied on the advice of their professional advisers.In the dim light of the early dawn,a coach was coming near to the village.He looked uneasy and refused to answer questions.The research should prove invaluable the study of linguistics.You must shine your shoes.Police have already identified around 10 murder suspects.共用题干 第一篇<br><br>The Development of Ballet<br><br>Ballet is a dance form that has a long history.The fact that it survives to this day shows that it has adjusted <br>as times have changed.<br>Ballet began in the royal courts during the Renaissance.At that time it became common for kings and<br>queens,as well as other nobility(贵族),to participate in pageants that included music,poetry,and dance. <br>As these entertainments moved from the Italian courts to the French ones,court ladies began participating in <br>them. Though their long dresses prevented much movement, they were able to perform elaborate(复杂的) <br>walking patterns.It was not until the 1600s that women dancers shortened their skirts,changed to flat shoes,<br>and began doing some of the leaps and turns performed by men.<br>It was also in the 1600s that professional ballet began.King Louis XIV of France,himself a devoted<br>dancer,founded the Royal Academy of Dance. The five basic feet positions from which all ballet steps begin <br>were finalized.In the late 1700s another important change occurred.Ballet began to tell a story on its own.It <br>was no longer simply dance to be performed between acts of plays.Elaborate wigs(假发)and costumes were <br>eliminated.By the early 1800s dancers learned to rise on their toes to make it appear that they were floating.<br>Classical ballet as we know it today was influenced primarily by Russian dancing. The Russians re-<br>mained interested in ballet when it declined in other European countries in the mid-1800s.One of the most <br>influential figures of the early 20th century was Sergei Diaghilev.His dance company,the Ballets Russes,<br>brought a new energy and excitement to ballet. One of his chief assistants,George Balanchine,went on to <br>found the New York City Ballet in 1948 and to influence new generations of dancers.This is not an inevitable reaction to high office.During his lifetime he was able to accumulate quite a fortune.These shops sell a diverse range of gifts of local features.