用适当的词填空。（共10小题；每小题1分，满分10分）

occur      inhabitant     crowd     measure     strong reduce     similarity      poor      fortunate    disaster

小题1:A fire broke out in the factory. ___________, one of the firefighters was killed.
小题2:The boy knows much about the           and differences between pop music and classical music.
小题3:The government is making efforts to ________the traffic noises in order to let citizens have a quiet sleep.
小题4:         have been taken to reduce pollution in developing countries.
小题5:He threw it forward with all his         .
小题6:The buses are so        during the rush hour.
小题7:The polluted air and water can explain the main reason why the ________here are getting ill one by one.
小题8:Our goal is to reduce the number of the families in         in the village.
小题9:An unexpected storm  　　 when we were enjoying the pleasant voyage at the Yellow Sea.
小题10:One million five hundred thousand people died in natural _____ between 1980 and 2000