皮皮学，免费搜题
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【多选题】
水灭火的作用有（ ）A.
乳化作用
B.
冷却作用
C.
水力冲击作用
D.
对氧的稀释作用
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皮皮学刷刷变学霸
举一反三
【单选题】Peter was so angry at all ____ Mary was doing ___ he walked out.
A.
what; as
B.
what; that
C.
that; which
D.
that; that
【单选题】Mary went to the booking-office at lunch time, but all the tickets _____ out. [ ]
A.
would sell
B.
was selling
C.
had sold
D.
have sold
【单选题】Mary went to the box office at lunch time, but all the tickets __________ out.
A.
would sell
B.
had been sold
C.
have been sold
D.
was selling
【单选题】以下关于社区卫生服务机构的组成，错误的是
A.
社区卫生服务中心是社区卫生服务机构网络的构成主体
B.
社区卫生服务站不需要在中心的统一组织下开展工作
C.
老年健康服务机构属于社区卫生服务机构
D.
社区卫生服务站不具备完整的“六位一体”功能
【单选题】Mary was out all night and her parents kept asking her where she______.
A.
was
B.
is
C.
had been
D.
has been
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