A．in actual

　　B．actually

　　C．as matter of fact

　　D．in a fact

　　Ⅱ.阅读理解people would not test medicines on animals.Such experiments are stressful and sometimes painful for animals, and expensive and time­consuming for people.Yet animal experimentation is still needed to help bridge vast gaps in medical knowledge.That is why there are some 50 to 100 million animals used in research around the world each year.

　　Europe, on the whole, has the world's most restrictive laws on animal experiments. Even so, its scientists use some 12 million animals a year, most of them mice and rats, for medical research.Official statistics show that just 1.1 million animals are used in research in America each year.But that is misleading.The American authorities do not think mice and rats are worth counting and, as these are the most common laboratory animals, the true figure is much higher.Japan and China have even less comprehensive data than America.

　　Now Europe is reforming the rules governing animal experiments by restricting the number of animals used in labs.Alternatives to animal testing, such as using human tissue or computer models, are now strongly recommended.In addition, sharing all research results freely should help to reduce the number of animals for scientific use.At present, scientists often share only the results of successful experiments.If their findings do not fit the hypothesis being tested, the work never sees the light of day.This practice means wasting time, money, and animals' lives in endlessly repeating the failed experiments.

【2014届高考英语第一轮复习课时练习题5】相关文章：

★ 2014高考英语（新人教版）一轮基础训练（18）A、B卷（附答案或解析）

★ 2014届高考英语第一轮复习课时练习题15

★ 湖南省岳阳市2014高考英语一轮单项选择训练题（17）及答案

★ 辽宁省辽阳市2014高考英语单项选择一轮（暑假）训练（15）附答案

★ 湖南省岳阳市2014高考英语一轮单项选择训练题（3）及答案

★ 【北京专用】2014届高考英语一轮复习方案课时作业：必修3 Unit 2 Healthy eating

★ 【浙江专用】2014届高考英语一轮复习课时作业(七)必修2Unit 2《The Olympic Games》

★ 2014届高考英语第一轮复习课时练习题40

★ 【人教版】2014届高考英语一轮复习指导考点针对练：选修6 unit1《Art》

★ 2017高考四川省广安市英语阅读理解一轮系列训练：4（含解析）