单选题 City residents have a hard time trying to avoid contact with hazardous chemicals in daily life.
A. dangerous B. prevalent C. novel D. invasive

【正确答案】 A
【答案解析】hazardous:危险的;dangerous:危险的;prevalent:流行的,普遍的;novel:新颖的;invasive:进攻性的,侵入性的,侵犯的