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【单选题】
【A2 题型】 某支气管哮喘患者,呼吸极度困难伴有哮鸣音,但目前未能查明原因,请问支气管哮喘急性发作最常见的诱因是A.
吸入粉尘螨
B.
呼吸道感染
C.
服用阿司匹林
D.
精神紧张
E.
剧烈运动
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皮皮学刷刷变学霸
举一反三
【单选题】As the economy is getting better and better，there are more and more jobs _______．
A.
valuable
B.
available
C.
previous
D.
convenient
【单选题】At the starting stage, the EOL will get information from______.
A.
all the Web sites available
B.
Databases built up by its creators
C.
Nonscientist with specialized knowledge
D.
the existing scientific databases
【简答题】Computers are helpful because they offer a wide range of functions and services that are not available anywhere else. There are four main uses: word processing, Internet/ communications, digital video...
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