9．In the year 1963，animal experimenter Clarence Little and his team carried out an experiment on more than 100 rats．The group of scientists used products such as cigarettes to test for lung cancer，and they were trying to find a cure．
They could not find any product to produce lung cancer or anything compared to the extremes that humans go through on the rats．Medical professionals are still insisting that they need to test on animals to cure cancer and other diseases．However，if rats can't contract the same diseases，it means there is no real point in testing them．
Since 1963，scientists have slowly been realizing that using animals in their experiments is not important．Medical advances have even been delayed due to experimenting on animals．Some data from U．S．Food and Drug Administration show that 92 percent of drugs which pass animal trials are found to be unsafe or ineffective in human trials and never reach the market．
Animal experimentation is less efficient and reliable than many non-animal methods of experimentation．The most hated and known practice of animal experimentation is "pound seizure" which is where animal shelters sell animals to some labs and companies to test their products．
It's shocking that some countries still allow testing on animals．There are many products that have not been tested on animals and they work even better than the products that have been．So the need for animal experimentation is zero；there are so many ways to get around it．Stopping animal experimentation could be easily done in a few steps：reducing the number of animals being tested，reducing the types of animals that are tested，making sure the outcome will be actually used and needed，and finally replacing all animals with non-living models．
32．Why did scientists do an experiment on rats in 1963？A
A．To look for a treatment for lung cancer．
B．To improve the quality of some medicines．
C．To find out how people suffered from cancer．
D．To look for the cause of an unknown disease．
33．What is a negative effect of using animals in experiments？B
A．Animals can easily become extinct．
B．Medical advances are slowed down．
C．A disease is easily spread among the animals．
D．Medicines used on animals are not accepted by men．
34．What do we know about"pound seizure"？A
A．It's widely used．
B．It's a non-animal test．
C．It helps stop animal testing．
D．It's reliable but not efficient．
35．Which of the following does the author agree with？D
A．Non-living models reduce the cost of experiments．
B．The government is to blame for medical tests．
C．It's easy to find a better way to test medicines．
D．There is no need to test medicines on animals．
分析 本文是一篇科教类阅读，属于说明文，1963年，动物实验者克拉伦斯小和他的研究小组对超过100只老鼠进行了一项实验，这组科学家使用产品，如香烟为肺癌测试，他们试图找到一种治疗方法．本文以此展开谈论，主要谈论了用动物做实验．
解答 32．A．细节理解题．根据The group of scientists used products such as cigarettes to test for lung cancer，and they were trying to find a cure．可知，科学家以老鼠做实验是为了找到治疗肺癌的方法．故选A．
33．B．推理判断题．根据Since 1963，scientists have slowly been realizing that using animals in their experiments is not important．Medical advances have even been delayed due to experimenting on animals．可知，使用动物做实验的消极影响是医学发展慢．故选B．
34．A．细节理解题．根据The most hated and known practice of animal experimentation is "pound seizure" which is where animal shelters sell animals to some labs and companies to test their products．可知，pound seizure被广泛使用．故选A．
35．D．推理判断题．根据However，if rats can't contract the same diseases，it means there is no real point in testing them．可知，如果老鼠不会得相同的病，那测试他们就没有意义．故作者认为没有必要在动物身上测试药．故选D．
点评 本文是一篇科教类阅读，题目涉及多道细节理解题，推理判断题．做题时学生应仔细阅读原文，把握文章主要内容，联系文章上下文内容并结合所给选项含义，从中选出正确答案，一定要做到有理有据，切忌胡乱猜测．
