【正文】
_____blowing hot gl ass. ______, the workers put some hot glass onto __________a long metal pipe. ______they start blowing from __________of the pipe. In some places of the world, people use fire _________. Every day, they collect and burn a huge ________rubbish. Keys: 見課文第三,四兩段 7.討論火的危害性以及可能造成的 原因。(參考 P3最后兩段) 8.回答 P2問題。 .