皮皮学，免费搜题
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搜题
【单选题】
血液流入左心室的是:A.
上腔静脉口
B.
下腔静脉口
C.
左房室口
D.
肺静脉口
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皮皮学刷刷变学霸
举一反三
【单选题】Bob inherits a large sum of money from his dead uncle's estate. Bob decides to retire young, so he quits his job and heads to the Bahamas. Bob is an example of
A.
frictional unemployment.
B.
structural unemployment.
C.
cyclical unemployment.
D.
None of the above is correct.
【简答题】Visitors are requested to show their tickets.英译汉
【简答题】Visitors can book a time slot a week or more in advance.(英译汉)