Hp感染的传染途径是（）。
A.口-口途径
B.粪-口途径
C.医源性传播
D.血液传播
E.母婴传播
参考答案：A, B, C
Apple has given in to intense pressure from Chinese state media about its customer service practices, ________ to consumers in its second-largest market.
A．apologizing
B．apologize
C．having apologized
D．to apologize
下列费用属于人工单价中劳动保护费的是（）。
A．修理费
B．取暖费
C．煤、燃气补贴
D．徒工服装补贴
