Ⅰ．单词拼写
1．He threw a stone to scare(吓唬) the dog away.
2．Pollution is pushing this animal to the very edge of extinction(灭绝)．
3．He dived(潜水) into the water and rescued the drowning boy.
4．Fortunately(幸运地是)，the fire was discovered soon after it had started.
5．He wrote a series of articles，hoping to change people's attitude(态度) towards the disabled.
6．The visit was targeted(把……作为目标) to develop relations between the two countries.
7．We want people to discover that sharks(鲨鱼) are amazing animals that need our protection.
