单项选择题

A．the desire to raise oil prices
B．the consideration that the demand may decrease
C．OPEC’s production capability
D．the fact that oil prices are unstable
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单项选择题
A．It is a suitable medium for tropical themes.B．It is not suitable for old time themes.C．The color changes from brown to purple.D．The color does not stay.
A．It is a suitable medium for tropical themes.
B．It is not suitable for old time themes.
C．The color changes from brown to purple.
D．The color does not stay.
单项选择题
A．all countries reported progress toward freedomB．only a few countries made progress toward freedomC．freedom took hold in many countriesD．many countries backed off from freedom
A．all countries reported progress toward freedom
B．only a few countries made progress toward freedom
C．freedom took hold in many countries
D．many countries backed off from freedom
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