问题
单项选择题
白喉棒状杆菌致病主要靠()
A.侵袭性物质
B.内毒素
C.外毒素
D.黏附素
E.荚膜
答案
参考答案:C
解析:白喉棒状杆菌一般不侵入血流,但其产生的大量外毒素可吸收入血,引起毒血症。
白喉棒状杆菌致病主要靠()
A.侵袭性物质
B.内毒素
C.外毒素
D.黏附素
E.荚膜
参考答案:C
解析:白喉棒状杆菌一般不侵入血流,但其产生的大量外毒素可吸收入血,引起毒血症。
完形填空。 | |||
Bob's Travel Diary (旅游日记) Tuesday, July 16th Today is rained, so we went to a museum (博物馆). It was 1 boring. I found (发现) a small boy 2 in the corner. He was lost (迷路) and I helped him find 3 father. That 4 me feel very happy. I didn't have 5 money for a taxi, so we walked back 6 the hotel. I was really tired. Wednesday, July 17th Today the 7 was cool, so we decided to 8 tennis (网球). We played all morning. It was really fun. We had Sichuan 9 for dinner. 10 was delicious (美味可口的)! | |||
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