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151. There is undoubtedly an element of truth in assertions that capital punishment is necessary , but proponents seem to ignore the fact that the practice has failed to deter heinous crimes . 毫无疑问，主张极刑的必要性有正确的成分，但是，支持者似乎忽略了这种做法不能阻止令人发指的罪行这一事实。 152. Many people assume that the extinction of a plant or animal species is of little consequence . Careful examination , however , reveals that the extinction of any one species disrupts the food chain , and the loss of a plant species leads to the disappearance of a key ingredient which might yield a cure for cancer . 许多人想当然地认为一种植物或动物的灭绝产生的后果很小。然而，仔细的考察揭示出任何一个物种的灭绝会破坏食物链，一种植物的消失造成有可能生成治疗癌症的药物的关键成分的缺失。 153. At first glance , the characteristics of Bugs BUnny seem comical . However , a closer examination reveals the cartoon character never creates a problem , and instead simply hopes for quiet and peaceful life . This suggests that cartoons most often teach children the difference between good and evil . 乍一看，流氓兔的性格似乎滑稽。然而，仔细观察发现这个卡通人物从不制造麻烦，相反，它只希望过安静平和的生活。这说明卡通在大多数情况下教授给儿童好与坏之间的区别。 | 
