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【多选题】
政府采购的采购方式有()A.
公开招标
B.
邀请招标
C.
竞争性谈判
D.
单一来源采购
E.
询价
F.
竞争性磋商
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反馈参考答案：
举一反三
【简答题】五味子的有效成分
【单选题】The question was so unexpected that, for a moment, Arthur was ______ a loss how to reply to it.
A.
at
B.
in
C.
on
D.
of
【单选题】The question was so ________ that there was a ________ expression on the teacher's face.
A.
puzzled; puzzling
B.
puzzled; puzzled
C.
puzzling; puzzled
D.
puzzling; puzzling
【单选题】The question was so difficult that the pupils didn't know how to __it.
A.
do
B.
deal
C.
manage
D.
tackle
【单选题】The question was so difficult that （） people could answer it.
A.
little
B.
afew
C.
few
【单选题】The question was so unexpected that I was ________for a moment.
A.
on balance
B.
out of balance
C.
in the balance
D.
off balance
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