A:混合气→a→c→b→a→d→c
B:混合气→c→d→e→e→a
C:混合气→a→e→e→b→d→c
D:混合气→b→e→a→d→c
— Four students in Qingdao stood in line against a man to save a woman teacher at the school gate.
— _________ great courage they had!
小弗郎士在小说《最后一课》中起到了什么作用?