皮皮学，免费搜题
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【单选题】
牙的功能不包括A.
发育时限定了舌的活动范围
B.
通过咀嚼可刺激颌骨正常发育
C.
通过咀嚼增进牙周组织健康
D.
保持面部形态正常
E.
保持口腔的自洁作用
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【简答题】n. 丑闻 首字母s
【简答题】物业管理专业学生在学习过程中会有两个重要实习,分别是( )和( ),这两门课同时也是物业管理专业的专业核心课。
【单选题】The main reason why two major airlines went bankrupt recently was that
A.
the recession had reduced the overall number of air passengers.
B.
the companies failed to attract an adequate number of passengers.
C.
competitions from other airliners took away all their trade.
D.
they introduced cheap flights for all categories of passengers.
【简答题】In the meantime, consumers are forced to make a choice between just two US and two UK airlines, which provide 95 percent of transatlantic services from Heathrow.
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