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【单选题】
下列哪项不是代谢性酸中毒的表现A.
呼吸深快
B.
精神萎靡，烦躁不安
C.
口唇樱桃红色
D.
胀，心音有力
E.
吸有丙酮味
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反馈参考答案：
举一反三
【单选题】Some people waste food，________other people haven’t got enough to eat.
A.
when
B.
until
C.
since
D.
while
【单选题】Some people waste a lot of food others in the world haven’t enough to eat.
A.
． after
B.
． when
C.
． as
D.
． while
【单选题】This article shows that ______.
A.
some people are trying to solve their waste problems
B.
the government is not concerned with the problem of wastes
C.
recovered materials won't be able to compete with new materials
D.
citizens will unwillingly pay the costs of changing the waste system
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