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Directions: Complete the following passage by using the sentences given below. Each sentence can be used only once. Note that there are two more sentences than you need.

We Americans ingest an average of 25 pounds of rice a year-and a portion of that comes from drinking beer. Yes, rice is a sample in our diet. But is it a safe one? Consumer Reports recently found "troubling" levels of inorganic arsenic, a known human carcinogen (a substance which can cause cancer), in almost every rice-containing food it tested. 1. But rice takes up arsenic from soil and water more readily than other grains do.

Health-conscious consumers rely on brown rice, which has even more arsenic. In the Consumer Reports test, a quarter cup of uncooked white rice had from roughly 1 to 7 micrograms of inorganic arsenic, while brown rice had from 4 to 10 micrograms. Why the difference? 2..

What about rice cakes? They contained from 2 to 8 micrograms per serving, while hot and ready-to-eat rice cereals had 2 to 7 micrograms. These levels are at least five times higher than those found in other cereals, such as oatmeal.

Studies show that people exposed to large amounts of arsenic for many years are more likely to die of cancer. In Bangladesh, people who drank tap water that contained 50 to 149 micrograms of arsenic per liter for 20 or 30 years, for example, were 44 percent more likely to die of cancer. 3. (The U.S. Environmental Protection Agency limits the total amount of arsenic in drinking water to 10 micrograms per liter.) But our total risk is unclear. There isn’t enough data to set a limit on inorganic arsenic in food, says the Institute of Medicine of the National Academy of Sciences.

The Bottom Line: 4. Consumer Reports recommends that adults eat no more than 11 /2 to 2 cups of cooked (brown or white) rice a week. And here is a way to lessen risk: Rinse your rice, cook it in six parts water to one part rice until it reaches eating texture, and then pour off the extra water. This can remove about half the arsenic.

A.You might wonder what one conscious portion of rice could do for your whole body.

B.Americans are lucky to be exposed to lower levels of arsenic.

C.This poisonous element is in a wide range of food-including fruits, vegetables and grains.

D.Until more studies are done, curb your consumption of arsenic.

E.Brown rice appears to be the most effective whole grain for the healthy growth of human beings, but its darker color can easily absorb too much arsenic.

F.Brown rice tends to have more arsenic because the metal concentrates in the outer layers, which are burnished off in white rice.

高三英语六选四困难题

少年,再来一题如何?
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