【示例一】
　　①Accordingly, it is vital for us to derive positive implications from these though-provoking drawings. ②On the one hand, we can frequently use them to enlighten that           （主题）. ③On the other hand, we should be sensible enough to ________（观点/态度）. ④Only by ________（段落总结句）, and only in this way can we have a brilliant future.
　　【示例二】
　　①The effects of     which has produced on     can be boiled down to two major ones. ②First, ________（影响一）. ③More importantly, ________（影响二）. ④Hence, I believe that we will see a  ________（提出展望）./ Nevertheless, I do not think we will see a ________（或反面展望）.