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【单选题】
人群易感性是A.
由一系列相互联系、相继发生的疫源地所构成
B.
传染源及其排出的病原体可以波及的范围
C.
病原体从受感染的机体排出后，再侵入易感机体前在外环境所经历的全部过程
D.
体内有病原体繁殖且能排出病原体的人和动物
E.
人群作为一个整体对某种传染病易感的程度
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【简答题】听力。 1. What does the man imply(暗示)? A. The article is actually longer. B. The article should be published earlier. C. He has more articles to be published. 2. What time does the train leave? A. At 6:5...
【简答题】Listen to the conversation. Answer the questions with complete sentences. (P25) 1. What does the second speaker do on New Year's Eve?
【单选题】What does the professor imply when he says this?
A.
He is concerned about the topic of her project.
B.
He assures the student that she has plenty of time to finish the project.
C.
He indicates that the student should focus only on a few tribes.
D.
He encourages the student to write all the tribes and peoples.
【单选题】— Could you ______ me your bike please? — Sorry , I'll use it. You can _____ Jack's. [ ]
A.
borrow, lend
B.
borrow, lend
C.
lend, borrow
【单选题】What does Louisa do on the day when she gets lost in the maze? (the following three from P.201-205)
A.
a parking lot attendant
B.
a shop assistant
C.
a flight crew attendant
【单选题】What does the liquid fluidity of biomembrane mainly depend on ?
A.
P rotein
B.
P olysaccharide
C.
L ipid
D.
G lycoprotein
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