It is the first report that home-grown food has been
contaminated by radioactivity, largely Iodine(碘)-131, since the ministry ordered radiation( powerful and harmful rays that are sent out from radioactive substances) tests on food and water at the end of March in 14 mainland regions including Beijing, Tianjin, and some coastal provinces.
Sample inspections conducted on Tuesday found low levels of radioactive iodine in spinach( a kind of green vegetables) planted in Beijing, Tianjin and Henan province --- about 1-3 becquerels per kilogram (Bq/kg), the statement said.
"The contamination level detected is too low to be harmful to public health," it said.
According to health experts, radioactive iodine can accumulate in humans once ingested in high concentrations and increases the risk of thyroid cancer. But it decays naturally within weeks.
Leafy vegetables grown in the open like spinach, lettuce and leek are among the first foods to be tainted by radioactive deposits.
Raw milk is also susceptible to radioactive contamination as livestock feed on grass.
Tests carried out in March showed spinach and milk taken from farms near Japan's nuclear-stricken area had exceeded(go beyond) government-set safety limits for radiation.
No cases of tainted water or milk have been reported in China but the ministry vowed to further strengthen monitoring.
Wang Zhongwen, a researcher at the China Institute of Atomic Energy's radiation safety department, told China Daily on Wednesday that currently China only had the means to conduct food radiation tests in a few regions.
The statement also said that recent rain in Beijing and Tianjin meant radioactive substances could have fallen on vegetables.
Chen Jicang, a vegetable dealer in Beijing, said on Wednesday that concerns are growing among consumers, businesses and governments across the world.
"We have yet to see any impact on our business from the radiation, but we will keep a close eye on how the issue develops," he said.
He added that most vegetables consumed in Beijing are produced locally, and he might switch to other varieties if spinach sales suffer.
Yang Guoshan, a researcher of radiation medical science at the Academy of Military Medical Sciences, said people could safely eat products that contain low levels of Iodine-131.
"The radiation level is so low that residents don't need to spend any extra effort on cleaning them," he said.
Gao Jie, a 52-year-old resident in Tianjin said she is deeply worried because spinach is a staple part of her family's diet.
"If spinach is radioactive, is there any possibility that other types of vegetables are safe?"
Trace levels of radioactive isotope cesium-137 and -134 were detected in the air in 21 provinces and regions on Wednesday, up from 17 on Tuesday, according to China's National Nuclear Emergency Coordination Committee.
小題1: What does the underlined word mean in para 1?
| A．protected | B．contained | C．polluted by dangerous substances | D．tested |
小題2:Why are the spinach and milk taken from nuclear-stricken area not safe?
| A．Because tests have been carried out there. |
| B．Raw milk is sensitive to radioactive contamination as livestock（家畜）feed on grass. |
| C．The amount of radioactive substances goes beyond the safe limits for radiation. |
| D．Japan is a nuclear-stricken area. |
小題3: Where do you think this passage comes from?
| A．a(chǎn) magazine | B．CCTV news | C．a(chǎn) journal | D．a(chǎn) novel |
小題4: What is not mentioned in the passage?
| A．Consumers became concerned about the safety of vegetables. |
| B．People need to clean vegetables completely before cooking because of radiation. |
| C．Food and water have to be tested since the end of March in 14 mainland regions |
| D．Low levels of radioactive iodine has been found in spinach in Tianjin |
小題5: What do you think is mainly talked about in the passage?
| A．How the radioactivity came into being |
| B．What we should do in face of radioactivity. |
| C．Radioactivity has no side effect on human being. |
| D．Home-grown food has been affected by radioactivity. |
nd it is happening now. An area, the size of England, is cleared of primary vegetation（植被）every year." Smith said. 
巧學(xué)巧練系列答案
her face, saying, “I hope you'll come. ” She left 31 , disappearing in the throngs of people quickly.
t well with the brilliant lights. I could feel all the audience in the hall 38 their eyes on her and it was also 39 for me to remove my sights from her. 40 
with a charming smile, she looked like a pretty butt
erfly flying on the splendid 41 . After all the performances ended, I waited for her at the gate.
42 to her. "I knew it would be wonderful." She could not hide her 43 , laughing like a child. Her crystal shoes were shinning in the wonderful 44 night. Suddenly I 45 that every girl has a pair of special shoes like the crystal shoes of Cinderella.
nks which are widely accepted in the United States. People are not only interested in the different choices of drinks, but also in the taste of bottled water and its 24 value.
minerals to give the water a better taste. But the term “mineral water” is 27 , because all water, except specially purified water, contains minerals. 28 must be made to tell people clearly what kind of water people are exactly buying: spring water, mineral water, or purified water. For example, “spring water” will have to come from a(n) 29 spring.
35 . In many cases, you are paying for water that is not much different from tap water. If you are not sure of the safety of your tap water, have it 36 . A local health department can be of 37 . Compared with the cost of bottled water, the testing cost will be less expensive. Letting cold water 38 for a minute or so before taking a drink or using it in preparing a meal is a good way to 39 possible water pollution, especially if the water has been 40 for an hour or more.
“Our aim is to take our art to the world and make people understand what it is to move,” said David Belle, the founder of parkour(跑酷).
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