传染病潜伏期的最重要意义在于()
A.有利于传染病的诊断
B.估计病情的预后
C.是检疫工作观察、留验接触者的重要依据
D.预测疫情
E.指导治疗
参考答案:C
轮船:海洋
A.宝马:香车
B.骆驼:沙漠
C.白雪:冬天
D.树木:森林
I think ______ of the materials I listened to at the beginning of the exam ______ easy. [ ]
A. three fourths, is
B. third four, are
C. three fourths, are
D. three fourth, are