It sounds like something is wrong with the car’s engine.________，we’d better take it to the garage immediately.                                            (2011·江苏，33)

A．Otherwise

B．If not

C．But for that

D．If so

女，30岁，体检时发现，HBsAg，抗-HBc，抗-HBe阳性，判断是否有传染性还应做的检查是（）

A.肝功能

B.HBVDNA

C.HBcAg

D.肝脏B超

E.肝脏MRI