[判断题]遇水燃烧物质都具有遇水分解,产生可燃气体和热量,能引起火灾的危险性但不易引起爆炸。( )
A.正确
B.错误

Passage 4 The fridge is considered a necessity. It has been so since the 1960s when packaged food first appeared with the label：“store in the refrigerator.” In my fridgeless Fifties childhood, I was fed well and healthily. The milkman came daily, the grocer, the butcher (肉商)， the baker, and the ice-cream man delivered two or three times a week. The Sunday meat would last until Wednesday and surplus (剩余) bread and milk became all kinds of cakes. Nothing was wasted, and we were never troubled by rotten food. Thirty years on, food deliveries have ceased, fresh vegetables are almost unobtainable in the country. The invention of the fridge contributed comparatively little to the art of food preservation. A vast way of well-tried techniques already existed-natural cooling, drying, smoking, salting, sugaring, bottling… What refrigeration did promote was marketing-marketing hardware and electricity, marketing soft drinks, marketing dead bodies of animals around
A. the author was well-fed and healthy even without a fridge in his fifties
B. the author was not accustomed to using fridges even in his fifties
C. there was no fridge in the author' s home in the 1950s
D. the fridge was in its early stage of development in the 1950s