63. Participating in interactive experiences beneficial to all is something that no one should miss . The valuable lessons learned therefrom should not be arbitrarily dismissed , but should instead be treasured .

　　参加对所有人都有益的互动式体验是任何一个人都不应该错过的。从中获得的宝贵经验不应该任意抛弃，而应该倍加珍惜。

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　　64. Abortion advocates may be correct in their assertion that the practice is a necessary tool of population control , but they seem to neglect the preciousness of human life in its earliest stages .

　　人工流产的提倡者认为它是控制人口的一种必要手段。他们也许是对的，但他们可能忽略了人的生命在最初阶段的宝贵。

　　65. Some people assert that nothing is impossible . Such people should get a grip on reality and understand it's impossible to create another Universe . In more down-to-earth terms , it's impossible to know with any certainty whether you will live or die tomorrow .

　　一些人断言没有什么事是不可能的。这些人应该把握现实，知道再造一个宇宙是不可能的。更现实的说法是不可能明确知道明天你会活着还是会死。

　　66. Two major factors contributed to devastating summer flooding along the Yangtze River and its tributaries . First , erosion resulting from excessive deforestation in the upper reaches of the river and , second ,heavy silting which raised the riverbed in the main channel .

　　两个主要因素导致了夏季长江及其支流的特大洪水。第一，过度砍伐引起的河流上游的侵蚀，第二，严重的泥沙淤积抬高了主干道的河床。

　　67. Greed and a total lack of social consciousness have been cited as major reasons for the dramatic rise corruption . 人们认为贪婪和社会意识的彻底缺乏是造成腐败急剧增加的主要原因。