16、There is a growing worldwide awareness of the need for strengthened environmental protection.

世界上越来越多的人认识到加强环境保护的必要性。

17、There has been a dramatic increase in the spread of HIV/AIDS in recent years，with a new study projecting that the dreaded disease will affect over 30 million people worldwide by the year 2005.

近年来，艾滋病蔓延的幅度进一步扩大，一项新的研究预测，到2005年，世界上有超过三千万人将感染这一可怕的疾病。

18、Working with the disabled cannot help but leave one impressed with their indefatigable desire.

与残疾人一起工作使一个人不得不对他们坚持不懈的渴望印象深刻。

19、Perhaps no issues are more controversial than euthanasia and abortion，both of which involve taking the life of a human being.

也许没有问题比安乐死和人工流产更有争议性，它们都涉及结束一个人的生命。

20、One of the pressing problema facing our nation(China)today is overcoming disparities in urban and rural income levels.

我们国家(中国)如今面临的紧迫问题之一是克服城乡收入水平之间的差距。