在进行肝癌普查中较常用的方法是()。
A.CT+AFP
B.AFP+B超
C.CEA+B超
D.B超+CT
E.ECT+CEA
参考答案:B
The old gentleman is considering _________he move to New York with his daughter and son-in-law or live alone at home.
A.when
B.how
C.what
D.whether
方程(x+2)(x-3)=0的解是( )
A.x1=2,x2=-3
B.x1=-2,x2=3
C.x1=-2,x2=-3
D.x1=2,x2=3