甲,乙,丙三位先生是同一家公司的职员,他们的夫人,M,N,P也都是这家公司的职员,知情者介绍说:“M的丈夫是乙的好友,并在三位先生中最年轻;丙的年龄比P的丈夫大”.根据该知情者提供的信息,我们可以推出三对夫妇分别是( )
A:甲﹣M,乙﹣N,丙﹣P
B:甲﹣M,乙﹣P,丙﹣N
C:甲﹣N,乙﹣P,丙﹣M
D:甲﹣P,乙﹣N,丙﹣M
如图所示,在凸透镜的右焦点处有一平面镜垂直于主光轴放置.一束光AB经凸透镜和平面镜怎样传播?画出光路图来.
— Which do you like better, beef noodles or tofu noodles?— I ______ beef noodles to tofu noodles. I used to have them for breakfast.
It is usually warm in Nanjing in spring. But sometimes it be very cold.