孕妇患乙型肝炎传给胎儿的主要方式为
A．经粪-口传播
B．注射血浆制品传染
C．母婴垂直传播
D．经输血传播
E．经哺乳传播
参考答案：C
—Thank you for the present you sent me. It's so nice.
—_______. [ ]
A. No, thanks
B. I'm glad you like it
C. Please don't say so
D. No, it isn't so good
什么是虚拟存储器？
