火灾对人员健康的危害有哪些？（）
A.呼吸道灼伤
B.皮肤灼伤
C.烧烫伤
D.眼灼伤
参考答案：A, B, C, D
胶体相互凝聚
I saw a ship stop at a（）. Which of the following is not correct?
A.deck
B.harbour
C.pier
D.port
