在1962年和1952年英国伦敦两次烟雾事件中发生多种急慢性疾病,其中起主层作用的污染物是( )。
A.SO2
B.烟尘
C.NOX
D.酸雾
E.甲醛
参考答案:B
单词拼写(按括号内所给首字母或汉语提示写出该单词,满分5分)
小题1:I would have been here an hour ago, but (不幸地) ,I missed the train.
小题2:He (创造) a system with patterns of six raised dots at the age of 15.
小题3:The Chinese language uses (文字) which stand for ideas, objects or deeds.
小题4:Modern English (出现) in the 16th century.
小题5:That is why English has so many rules, that (使……困惑) many people.
小题6:Our school was f in 1928.
小题7:All the towns were in r after the earthquake.
小题8:She p wine into the glasses for her guests.
小题9:Call me up when it is c to you.
小题10:Mr Wang will r Mr Li to teach us English.
面向对象的模型中,最基本的概念是对象和 【3】 。