问题
选择题
Eighteen kids died in the school bus accident in Gansu Province. It’s _____ one that I have ever heard of.
A．a very serious
B．a more serious
C．the most serious
D．the least serious
答案
答案：C
本题难度适中，考查最高级，句子意思是，这个事故是我听到过最严重的，答案选C。