阅读理解，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

　　参考答案及解析

　　41．B[解析]本题是细节考查题。原题是：为什么巧克力对心脏和血液循环有益。原文是："巧克力中含有一种叫类黄酮的物质，它能维护心脏的健康并促进血液循环。"选项A"它可以减少痛苦和压力"；选项B"它含有一种叫做类黄酮的物质"；选项C"它在人体内释放内啡肽"；选项D"它能起到像阿司匹林一样的保护心脏的作用"。因此只能选B。

　　42．B [解析]本题是细节考查题。原题是：可可第一次作为什么被引入欧洲并迅速流行起来?原文是："1544年，一个玛雅贵族代表团觐见西班牙国王菲利普时送给他一罐可可作为礼物。"选项A"作为一种饮料"；选项B"作为礼物"；选项C"作为食品"；选项D"作为一种药"。因此只能选B。

　　43．D [解析]本题是细节考查题。原题是：那件事是James Baker和John Hanan做的有关巧克力的事。原文是："1765年，James Baker和and J0hn Hanan在美国开办了第一个巧克力作坊，将巧克力介绍给了普通人。"选项B"将巧克力引入欧洲"；选项C"他们给巧克力棒加入糖"；选项D"他们使普通人也能吃到巧克力"；选项A"他们制造了第一块口味柔和的巧克力"。因此只能选D。

　　44．B [解析]本题是细节考查题。原题是：根据文章所述，如下哪个说法是不正确的? 原文是："研究者们警告虽然巧克力对我们有好处，但应该少量食用而且不应另加奶。"选项A "巧克力含有让人感到快乐的物质"；选项B"吃加糖的巧克力对身体有利"；选项c"偶尔吃巧克力对身体有益"；选项D"巧克力为全世界成百上千万的人们所喜爱"。因此只能选B。

　　45．C [解析]本题是阅读理解能力考查题。原题是：作者对于吃巧克力的语气是什么样的?选项A"模棱两可的"；选项B"否定的"；选项C"肯定的"；选项D"幽默的"。从题目和文中总体内容可见，这篇文章说明吃巧克力的好处，虽然在后面提出吃巧克力时的注意事项但不影响作者肯定的语气，因此只能选C。

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