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【单选题】
关于食管的叙述,错误的是A.
食管全长有三处狭窄
B.
全长分为3部,其中颈部最长
C.
位于气管的后方
D.
第一处狭窄距切牙15cm
E.
第三处狭窄位于穿膈处
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举一反三
【单选题】William found it increasingly difficult to read, for his eyesight was beginning to _____. [ ]
A.
disappear
B.
fall
C.
fail
D.
damage
【简答题】Clerk(C):Good morning. Guest Service Center. Can I help you? Guest(G): I certainly hope so. I am very(1) . C: What seems to be the problem, madam? G: The air-conditioner in my room isn't working and t...
【简答题】固体胶棒,80克装
【单选题】According to the American Red Cross, blood donors are __________ needed after natural disasters or other catastrophes.
A.
bizarrely
B.
urgently
C.
fantastically
D.
verbally
【简答题】对n个记录进行冒泡排序时，最少的比较次数为【】，最少的趟数为【】。
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