Watercress is positively packed with healthy vitamins and minerals. The writings of both the Romans and the Ancient Greeks record the consumption of watercress by all classes. Hippocrates, “the father of medicine”, was so convinced that watercress was a great healer that he built his first hospital next to a stream so that he could grow a plentiful supply of the shiny green leaves for his patients. The Romans chewed watercress in large quantities, believing that it would cure baldness. They, too, looked with favor on watercress as a salad.
Watercress sandwiches were traditionally a breakfast item in nineteenth-century Europe. The most basic type of watercress sandwich has two pieces of white bread with a mixture of butter and watercress greens . A nickname(綽號)for the vegetable, in fact, was “poor man’s bread”, because watercress was often eaten on its own for breakfast by families that could not afford the bread to go with it.
Watercress is a member of the mustard(芥菜) family. It contains vitamins C(66mg per 100g), K and A, and is also a valuable source of minerals such as iron, potassium, copper and calcium. The mustard oils in its silky leaves and stems(莖)contain an ingredient known as PEITC. Recent research has proved that PEITC can prevent the growth of cancer cells and, in some cases, actually destroy them.
The best watercress has silky green leaves without any marks and has undamaged stems, The older the plant, the darker are its leaves and the thicker its stems. This means a higher concentration of oils and vitamins. Young watercress, on the other hand, may be harvested after only twenty-eight days growth and has a milder taste. It is  best to eat watercress fresh and raw , to keep more of its valuable nutrients, but it can be lightly cooked and used as an alternative to spinach—another dark green vegetable—in various recipes. From soups to salads, watercress is now considered around the world as a natural and healthy super food.
小題1:From paragraph 1, we can learn that________.
A．watercress is usually grown in wet areas
B．the ancient Greeks only used watercress for medicine
C．watercress is the most ancient vegetable known to man
D．the Romans rubbed watercress on their heads to cure baldness
小題2:The underlined word “it” in paragraph 2 refers to “_________”.
A．butterB．watercressC．breakfastD．bread
小題3:Which of the following is TRUE about watercress?
A.It belongs to the same family as spinach.
B.It contains mustard oils only in leaves.
C.It can help guard against cancer.
D.It is rich in vitamins C and B.
小題4:Compared with older watercress, young watercress      .
A．has lighter green leaves
B．contains more minerals
C．is better for medical use
D．is more suitable for eating raw
小題5:What would be the best title for the text?
A．The history of watercressB．watrcress, a medicinal plant
C．Watercress, the amazing foodD．New findings about watercress

小題1:A
小題2:B
小題3:C
小題4:A
小題5:C

試題分析：
【文章大意】本文是一篇說明文。文章介紹了西洋芹這種植物，它既可以當食物吃，又有藥的療效。
小題1:A考查推理判斷。根據(jù)文章第一段中的Hippocrates, “the father of medicine”, was so convinced that watercress was a great healer that he built his first hospital next to a stream so that he could grow a plentiful supply of the shiny green leaves for his patients.可知，西洋芹生長在潮濕的地方，因為Hippocrates把他的醫(yī)院建在小溪旁邊，為了種植西洋芹。由此推知A正確。
小題2:B考查代詞的指代。根據(jù)文章第二段中的because watercress was often eaten on its own for breakfast by families that could not afford the bread to go with it.可知，it指代前面的watercress。故選B。
小題3:C考查細節(jié)理解。根據(jù)文章第三段中的The mustard oils in its silky leaves and stems(莖)contain an ingredient known as PEITC. Recent research has proved that PEITC can prevent the growth of cancer cells and, in some cases, actually destroy them.可知，西洋芹有抗癌作用。故選C。
小題4:A考查推理判斷。根據(jù)文章第四段中的The older the plant, the darker are its leaves and the thicker its stems.可知，西洋芹生長的越久，葉子的顏色就越深。由此推知生長日期少的顏色就淺。故選A。
小題5:C考查文章的標題。根據(jù)文章整體內容可知，文章介紹了西洋芹是一種既可以當食物用有可以起到藥的作用的植物。所以它是一種神奇的食物。故選C。
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