A：木炭燃烧
B：汽油燃烧
C：蜡烛燃烧
D：食物腐败
⑴____ A. cousin B. sister C. Miss D. nurse
⑵____ A. there B. here C. where D. bear
⑶____ A. tall B. ball C. also D. all
⑷____ A. this B. thin C. there D. they
⑸____ A. uncle B. orange C. student D. stand
