Misfortunes tell us what fortune is.不经灾难不知福。
The last drop of humans will be tears of regret afterenvironmental damage.人类的最后一滴水将是环境破坏后悔恨的眼泪。
Nature is kind of a loving mother，but also a butcherin cold blood自然不仅是慈爱的母亲,也是冷血的屠夫。

1.Speaking-Finish Ex.4 on Page 49 by following the example.
Good morning. Today is 13 May.A huge earthquake hit Wenchuan，China，yesterdayaftenoon.At least 8，500 people were killed by 13 May in the 7.8 magnitudeearthquake.Rescue workers and soldiers are working day and night to dig out thosetrapped in the ruins and help the survivors.