黑热病的感染途径是
A.经食物传播
B.经空气传播
C.经虫媒传播
D.经土壤传播
E.经血液传播
参考答案:C
解析:黑热病是杜氏利什曼原虫引起,经白蛉叮咬传播。
根据所给汉语提示完成句子。
1. You shouldn't _____ _____ (与……争吵) your parents like that.
2. They also visited _____ _____ (别的地方) after they left the museum.
3. My family all went to the new zoo last Sunday _____ (除我之外).
4. His father was angry with him, because he _____ _____ (做错事) while at school.
5. I think there are lots of things _____ _____ _____ (我们可以做).
前置胎盘分型是根据()。
A.胎盘与宫颈的关系
B.胎盘上缘与宫颈的关系
C.胎盘上缘与宫颈外口的关系
D.胎盘下缘与宫颈内口的关系
E.胎盘下缘与宫颈外口的关系