单选题
______ all the possible disasters mentioned, the one promoting most discussions was a major release of radioactivity from a nuclear power station.
【正确答案】
B
【答案解析】此题的测试点是介词。of all“在所有的……当中”，经常与形容词或副词最高级在一起连用，不说among all，考生一定要注意与汉语在表达上的区别。例如：Of all the visible lights, red light has the longest and violet the shortest wave length.