56. On the wedding, the bride often uses old and borrowed things so as to _____.

　　A. save some money for the wedding

　　B. bring good luck to the people who gave them to the bride

　　C. give the good luck to the bride herself

　　D. pass the bad luck to others

　　57. After reading the passage, we may feel it is written in a _______ tone.

　　A. formal

　　B. serious

　　C. humorous

　　D. critical

　　E

　　Drinking a lot of water does not do any good to the body, according to two experts in the United States. In fact, they warn, drinking too much water could be, in certain cases, harmful.

　　In a study, Dr Stanly Goldfarb and Dr Dan Negoianu, both of the Renal, Electrolyte and Hypertension Division at the University of Pensylvania, the United States, have denied the popular belief that drinking a lot of water clears body toxins（毒素）better, improves skin, and helps reduce weight.

　　Dr Goldfarb and Dr Negoianu say that they found little proof to back the public opinion that drinking 8 glasses of water every day benefits health. At the same time, they fond little proof of harm in drinking 8 glasses of water every day.

　　It is widely believed that in some cases, such as athletes, people who live in hot, dry environments, and those with certain medical conditions-drinking a lot of water indeed helps, but no studies have been done to prove the benefits of this practice in average, healthy people, the website medheadlines.com reports.

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