在城市，哪种疾病较易出现
A．自然疫源性疾病
B．肠道传染病
C．呼吸道疾病
D．虫媒传染病
E．寄生虫病
参考答案：C
The Prime Minister refused to comment on the rumor that he had planned to _____.
A．discharge
B．dismiss
C．resign
D．resume
