问题
单项选择题 A1/A2型题
引起产褥感染的外源性感染最常见病原菌是（）
A.β溶血性链球菌
B.厌氧链球菌
C.大肠杆菌
D.葡萄球菌
E.支原体衣原体
答案
参考答案：A
解析：需氧性链球菌是外源性感染的主要致病菌，其中β溶血性链球菌致病能力最强，与产褥感染关系密切，可引起严重感染。
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引起产褥感染的外源性感染最常见病原菌是（）
A.β溶血性链球菌
B.厌氧链球菌
C.大肠杆菌
D.葡萄球菌
E.支原体衣原体
参考答案：A
解析：需氧性链球菌是外源性感染的主要致病菌，其中β溶血性链球菌致病能力最强，与产褥感染关系密切，可引起严重感染。
Directions: There are 10 blanks in the following passage. For each numbered blank, there are 4 choices marked A, B, C and D.
| Historians tend to tell the same joke when they are describing history education in America. It’s the one (51) the teacher standing in the schoolroom door (52) goodbye to students for the summer and calling after them. "By the way, we won World War II." The problem with the joke, of course, is that it’s not funny. The recent surveys on (53) illiteracy are beginning to numb. nearly one third of American 17-year-olds cannot even (54) which countries the United States fought against in that war. One third have no idea when the Declaration of Independence was (55) . One third thought Columbus reached the New World after 1750. Two thirds cannot correctly (56) the Civil War between 1850 and 1900. Even when they get the answers right, some are just guessing. Unlike math or science, ignorance of history cannot be (57) connected to toss of international competitiveness. But it does affect our future (58) a democratic nation and as individuals. The good news is that there is growing agreement on what is wrong with the (59) of history and what needs to be done to fix it. The steps are tentative (尝试性的) (60) yet to be felt in most classrooms. |
A．exclusively
B．practically
C．shortly
D．directly