题目

用简便方法计算 （1） 247+186+114+53 （2） 868-52-48 （3） 2000÷125÷8 （4） 35×6+35×5-35 答案：解：=（247+53）＋（186+114） =300＋300 =600 解：=868-（52＋48） =868-100 =768 解：2000÷125÷8 =2000÷（125×8） =2000÷1000 =2 解：35×6+35×5-35 =35×（6＋5-1） =35×（11-1） =35×10 =350阅读理解 　　Over one hundred and fifty years ago, a drug called opium started a war between Great Britain and China. The war which lasted two years, was called the Opium War. About two hundred years ago opium was brought to China from India. It was carried on ships, most of which were owned in Great Britain. The Chinese government tried to stop ships from bringing opium in－to China because more and more people were becoming opium addicts. 　　British merchants didn't like the idea of losing money because they couldn't sell their opium to the Chinese. They refused to surrender(交出) to Chinese officials the opium they carried in their ships. This started the Opium War. It lasted from 1840 to 1842, when the Chinese were defeated. The Chinese signed a treaty giving Britain $ 6 million. The amount of opium coming into China then doubled and tripled. So did the number of opium addicts. 1．What most important thing is said in the passage? [　　] A．The British sold opium to the Chinese. B．A lot of people in China. used opium. C．Opium caused a war between China and Great Britain. D．China lost the Opium War. 2．What does the underlined word “addicts” probably mean? [　　] A．Patients in hospital. B．People who lived in China many years ago. C．People who want to get rid of the bad habit. D．People who are unable to free themselves from taking drugs. 3．Which of the following is true according to the passage? [　　] A．The British merchants refused to carry opium in their ships to China. B．The Opium War ended in the British merchants' surrender of opium to Chinese officials. C．With a larger amount of opium coming into China, the number of opium addicts became larger, too. D．The opium was brought to China from Britain.