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　　下面有一篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。

Scientists Make Sweet Discovering

　　Good news for chocoholics：the treat preferred by millions all over the world is good for you， according to American researchers at the University of California．Chocolate contains substancescalled flavonoids that can help maintain a healthy heart and good circulation．The researchers havediscovered that cocoa acts like aspirin and that eating a bar of chocolate has also been shown to release endorphins in the body：these chemicals help to reduce pain and stress and make you feel happy.

　　The Olmec Indians of Mexico and Central America were the first to grow cocoa beans，in about1500 BC，and the Mayas were drinking unsweetened coca hundreds of years before it became fashionable in Europe．

　　In 1544，a delegation of Mayan nobles visited Philip of Spain and gave him jars of cocoa as a gift．Cocoa soon became fashionable in Spain and Portugal．The Spanish were the first to add sugarto their cocoa drink．

　　By the middle of the century，solid chocolate was becoming familiar．In 1765，James Baker and John Hanan opened the first chocolate mill in the United States，introducing chocolate to the average citizen．In 1896，in Switzerland，Daniel Peter had the idea of adding milk in the chocolate-making process and produced the first milk chocolate．

　　Since then，chocolate has grown enormously in popularity．One of the biggest chocolate-eatingnations is Britain where the average man，women，and child eats nine kilos of chocolate a year．Infact，chocolate is the number one comfort food and there are more chocoholics in Britain than any where else in the world．Researchers warn that although chocolate is good for you，it should be eatenin small quantities and with no added milk．

　　41．Why is chocolate good for heaa and circulation?

　　A．It reduces pain and stress．

　　B．It containS substances called flavonoids．

　　C．It releases endorphins in human body．

　　D．It acts like aspirin to protect heart．

　　42．When cocoa was first introduced to Europe_________，it soon became fashionable．

　　A．as a drink

　　B．as a gift

　　C．as food

　　D．as a medicine

　　43．What does James Bakers and John Hanan do about chocolate?

　　A．They produce the first mild chocolate．

　　B．They introduce chocolate to Europe．

　　C．They add sugar to make chocolate bars．

　　D.They make chocolate accessible to average man．

　　44．Which is the following statement is not true according to the passage?

　　A．Chocolate contains substances that make people feel happy．

　　B．Chocolate is good for health if it is eaten with added milk．

　　C．Eating chocolate occasionally contributes to a healthy diet．

　　D．Chocolate is loved by millions of people worldwide．

　　45．What iS the author's tone about eating chocolates?

　　A．ambiguous

　　B．negative

　　C．positive

　　D．humorous

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