肝炎病毒中，核酸为DNA的有（）
A.HAV
B.H1V
C.HCV
D.HEV
E.HBV
参考答案：B, E
He has been waiting for _______ night.[ ]
A. whole
B. whole the
C. the whole
D. the all
The ship’s bearing is 145°（）the Lighthouse.
A.in
B.on
C.for
D.from
