In fact most people in that area are _______ than they were 5 years ago because of years of wars.[      ]

A. poorer off

B. worse off

C. better off

D. richer off

药材粉末加水放置后时时振摇，滤液日光下显橘红色，置紫外灯下观察，显黄绿色荧光的是（）

A.沉香

B.苏木

C.小通草

D.木通

E.降香