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【单选题】
感染艾滋病病毒(HIV)的孕妇引起胎儿感染，这是经A.
医源性传播
B.
垂直传播
C.
食物传播
D.
接触传播
E.
飞沫传播
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反馈参考答案：
举一反三
【单选题】(2009.12)________ some students are able to find employment after graduation, others will have to return to school and earn an advanced degree.
A.
Since
B.
While
C.
Because
D.
If
【简答题】2小测验题.docx
【简答题】测验题.doc
【单选题】(2009.12)It is important that we ________ the task ahead of time.
A.
will fish
B.
finished
C.
finish
D.
shall finish
【简答题】(2009.12) Some domestic manufacturers are busy increasing production, losing the chance to develop more (advance) ________ technology.
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