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【单选题】
对医院内感染分类的描述,正确的是( )A.
内源性感染又称自身感染，病原体通过直接或间接的途径传播给患者
B.
外源性感染又称交叉感染，病原体来自于患者自身和体外
C.
按病原体的来源不同，可分为内源性感染和外源性感染
D.
按病原体的种类不同，可分为内源性感染和外源性感染
E.
内源性感染又称交叉感染，病原体通过间接途径传播给患者
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举一反三
【单选题】—— Is he still working? ——Yes,he ____ now and he _____ yet.
A.
is still working; hasn’t finished
B.
Works; doesn’t finish
【简答题】临床常见的I型超敏反应性疾病有：__________；__________；__________；__________。
【单选题】When the author says robots are still pretty dumb, he means______.
A.
robots have not yet possessed sense of touch
B.
robots still cannot read
C.
there are still many things robots cannot do
D.
humans are no match for robots
【单选题】Though he spent much time on the last maths problem，yet he still couldn’t__________it．
A.
solve
B.
count
C.
reflect
D.
determine
【判断题】As Mary's violin was old and worthless, she sold it only for seven dollars
A.
正确
B.
错误
【简答题】Is he still working? Yes, he_________( still work ) now and he ________ ( not finish) yet.
【简答题】临床上常见的I型超敏反应性疾病有______、______、______、______和______。
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