a minute，it caused the worst 5.natural(nature) disaster in the nation's history.

　　Fires 6.caused (cause) by the California Earthquake did the most damage.The fires burned for three days，7.destroying (destroy) a total of 25，000 buildings.About 500 people 8.were killed (kill) in the city of San Francisco and 250，000 were made homeless.9.In the whole of California，the earthquake and fires caused about 3，000 10.deaths (death)．

　　Ⅰ.单词拼写

　　根据汉语或首字母提示，写出下列单词

　　1．The new square is four times the size of the previous(以前的) one.

　　2．The volcano erupted(喷发) suddenly and hundreds of people died in the disaster.

　　3．These chemicals have been found to cause serious environmental damage(损害)．

　　4．Don't stay up too late.It might ruin your health.

　　5．She takes an active part in all kinds of after­school activities.

　　6．We have 2，000 members worldwide．

　　Ⅱ.拓展词汇

　　根据词性和汉语提示，写出下列单词

　　1．sad adj.悲伤的→sadly adv.伤心地；不幸地→sadness n．悲伤

　　2．luck n．运气，好运→lucky adj.幸运的→luckily adv.幸运地；幸亏

　　3．fortune n．运气→fortunate adj.幸运的→fortunately adv.幸运地；幸亏

　　4．terrify vt.使惊恐；使受惊吓→terrified adj.恐惧的；受惊吓的→terrifying adj.吓人的；可怕的

　　5．hope vt.&n.希望→hopeful adj.满怀希望的；有希望的→hopefully adv.满怀希望地；有希望地

　　Ⅲ.补全短语

　　根据提示补全下列短语

1．take place　　 发生