第31题: [单项选择]影响传染病流行过程的因素是() A. 自然因素 B. 社会因素 C. 自然因素和社会因素 D. 病原体的毒力 E. 病原体的侵袭力 参考答案:C
第32题: [单项选择]Terry boasted that he could finish the project by himself in no time. A. very quickly B. on time C. in time D. at any time 参考答案:A 答案解析:画线词in no time,是个成语,马上,刻不容缓。辨义:A.very quickly马上,立即;B.on time按时;C.in time及时;D.at any time随时。故A为正确答案。