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【单选题】
边际成本低于平均成本时A.
平均成本上升
B.
平均成本下降
C.
总成本下降
D.
平均可变成本上升
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【单选题】—Which is the longest river in China,the Changjiang River or the Yellow River? —The Changjiang River. The Yellow River is river in China.
A.
the second longest
B.
the second longer
C.
a second longest
D.
the second long
【单选题】—The Changjiang River is the first longest river in China. Which is the _______ river in China? —The Yellow River. [ ]
A.
second longest
B.
first longest
C.
longest two
D.
longest one
【单选题】The yellow river isn’t so()as the ChangJiang river.
A.
long
B.
longest
C.
longer
D.
the longest
【单选题】We often associate the Yellow River and the Changjiang River______ the civilization of the Chinese people.
A.
by
B.
to
C.
from
D.
with
【单选题】The Yellow River is the longest river ____ to the Changjiang River.
A.
next
B.
than
C.
to
D.
for
【单选题】Wuhan lies _____ the Changjiang River and the Han River meets.
A.
where
B.
wherever
C.
that
相关题目：
【单选题】The yellow river isn’t so()as the ChangJiang river.
A.
long
B.
longest
C.
longer
D.
the longest
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