第二卷（满分50分）
Ⅰ：阅读理解：（共8小题，每题1分，总分8分）
（A）
Chocolate might lower your chances of having a heart problem. According to a new study, a new study, a small amount of chocolate every day could decrease the risk of having a heart attack, by nearly 40 percent, German researchers followed nearly 20,000 people over eight years, sending them several questionnaires about their diet and exercise habits. They found people who had an an average of six grams of chocolate a day—or about one square of a chocolate bar—had a 39 percent lower risk of a heart attack.
Previous studies have suggested dark chocolate in small amounts could be good for you, but this is the first study to track its effects over such a long period. Experts think the flavonols（黄酮醇）contained in chocolate are responsible. Flavonols, also found in vegetables and red wine, help the muscles in blood vessels（血管）widen, which leads to a drop in blood pressure. “It’s a bit too early to come up with recommendations that people should eat more chocolate, but if people replace sugar or high-fat snacks with a little piece of dark chocolate, that might help,” said Brian Buijsse, a doctor at the German Institute of Human Nutrition in Nuthetal, Germany, the study’s lead author.
The people tracked by Buijsse and colleagues had no history of heart problems, had similar habits for risk factors like smoking and exercise, and did not vary widely in their Body Mass Index（身体质量指数）.
Since the study only observed people and did not give them chocolate directly to test what its effects were, experts said more research was needed to determine the candy’s exact impact on the body. Doctors also warned that eating large amounts of chocolate could lead to weight gain. “This is not a prescription（指示）to eat more chocolate,” said Robert Eckel, a professor of medicine at the University of Colorado who is not linked to the study. “If we all had (a small amount of)chocolate every day for the rest of our lives, we would all gain a few pounds.” Eckel said it was amazing to find such a small amount of chocolate could have such a protective effect, but that more studies were needed to confirm its conclusions.
1．What is the main purpose of the article?
A．To suggest people eat as much dark chocolate as possible.
B．To warn people not to eat too much chocolate.
C．To tell people how to avoid a heart attack.
D．To report on a study about the benefits of chocolate.
2．Both Buijsse and Eckel believe that .
A．dark chocolate in enough amounts could be good for our health
B．eating large amounts of chocolate could lead to weight gain
C．we can cure our heart problems with dark chocolate
D．we’d better not advise people to eat more chocolate at present
3．Which of the following statements about the study is FALSE?
A．It’s the first time that the effects of dark chocolate has been examined.
B．The researchers followed nearly 20,000 people for over eight years.
C．The researchers didn’t give any diet instructions to the people followed by the study.
D．The study found that eating about six grams of chocolate a day was beneficial.
4．We can infer from the text that .
A．eating a small amount of dark chocolate will lower your blood pressure
B．scientists are now certain of the effects of dark chocolate
C．eating a little chocolate over a long period will not lead to weight gain
D．Flavonols can only be found in dark chocolate and red wine
