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问题 单项选择题 A1/A2型题

关于病原菌致病性的构成因素，叙述最全面的是（）

A.毒力+侵入部位+细菌数量

B.毒素+侵袭力+侵入部位

C.侵袭力+侵入部位+细菌数量

D.侵袭酶类+毒素+细菌数量

E.侵入部位+毒素+细菌表面结构

答案

参考答案：A

完形填空
完型填空。
    When Susan was at university, she often went to   1   library. It was a beautiful building. She liked it because it
was nice and quiet. Sometimes   2   the library she worked on the computer and did   3   research. At other times
she read history books. She discovered many   4   things about the past. She learnt about how difficult life was in
the past. She often   5   a notebook with her so that she could make notes in it.
( ) 1. A. the         
(     ) 2. A. on          
(     ) 3. A. A. some     
(     ) 4. A. A. interest     
(     ) 5. A. bought       		B. a            
B. by           
B. any          
B. interested        
B. took        		C. an         
C. at           
C. other        
C. interesting       
C. saw         		D. /          
D. for        
D. another                
D. right      
D. put      
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判断题

喜阳性花卉花季都是在夏天。
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