—_____is it?
—It's 20 yuan.[ ]
A. How many
B. How much
C. How about
D. What about
B
原发性肝癌的早期,下列检查中最有诊断价值的是()
A.癌胚抗原
B.凝血酶原
C.甲胎蛋白
D.血清转氨酶
E.酸性同工铁蛋白
We are lucky to be among the generation of people who have________and experienced the great social
changes in our country.[ ]
A.reported
B.appreciated
C.impressed
D.witnessed