21．Nowadays more and more people begin to realize／be aware of／notice the importance／significance／seriousness of the problem of education／pollution／unemployment．   

 现在越来越多的人开始认识到(注意到)教育(污染，失业)问题的重要性(严重性)。  

22．We often find ourselves caught／involved in a dilemma whether we should reach for the bear’s paw or for the shark’s fin．．．

我们常常发现自己陷入一个进退维谷的境地：是取鱼翅还是熊掌……

23．There is a growing worldwide awareness of the need for．．

全世界对……需要的认识正在不断深入。，

24．Recently the issue／problem of．．．has been in the limelight／brought into focus／brought to public attention／concern．

最近……的问题引起了人们的注意(成了焦点问题，引起了公众的注意，关注)。

25．A recellt report released by the government has caused nationwide repercussions.

政府最近发布的一份报告在全国引起反响。

26．Recently the phenomenon has aroused wide concern·

最近这个现象引起了广泛的关注。

27．One of the(universal／pressing／burning／urgent)problems／issues we are faced with(confronting us)is that．．．

我们面临的其中一个全球性的(紧迫的，迫在眉睫的)问题是……

28．Recently the problem／issue／conflict has become the focus／concern of the public.

最近这个问题(冲突)成了公众关注的焦点(中心)。

29．There is a(public／general／heated／impassioned)debate／discussion／controversy today／nowadays as to／over／on／concerning the issue／problem of．．．．Those who criticise／oppose／object to．．．contend／argue that．．．．They believe that····But people who advocate／favor／are for．．．，on the other hand，maintain／assert that···

当前，人们就某事(现象)展开了激烈的(广泛的，热烈的)讨论(争论)。批评(反对)的人辩称……，他们认为……。然而，支持者却认为……

30．A public debate has arisen as to the phenomenon of．．

关于……的现象引发了一场公众争论。