the occasional visit, what else does Alan do for his kids?

A．Except

B．In spite of

C．Apart from

D．Beside

在医院中幽门螺杆菌的传播以下列哪种方式最多见()

A．空气传播

B．接触传播

C．血液传播

D．唾沫传播

E．内镜操作传播