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【简答题】
有机酸在果蔬中的含量,因其成熟度及生长条件不同而异,一般随着成熟度提高,有机酸含量下降,而糖的含量增加,糖酸比 。
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【单选题】At each step along the way, economic pessimists warned that the economy was about to tumble into a yawning ______ .
A.
spot
B.
scar
C.
gap
D.
chasm
【简答题】相同碳原子数的饱和一元醛、酮互为(),通式为()
【简答题】油漆桶工具的快捷键是?
【简答题】Most people are worried about the health of economy. But does the economy also affect your body health? It does, but not always the ways you might expect. The data(数据) on how an economic downturn infl...
【单选题】At each step along the way, economic pessimists warned that the economy was about ____ tumble into a yawning chasm.
A.
into
B.
to
C.
on
D.
for
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