器官移植时通常进行的HLA配型是()。
A.HLA-A
B.HLA-B
C.HLA-C
D.HLA-DR
参考答案:A, B, D
农业总产值一般采用何种方法进行计算( )
A.产品法
B.企业法
C.工厂法
D.分配法
John takes after his father. They have the same eyes, nose and hair.
A.looks after
B.is similar to
C.takes care
D.likes