单项选择题

A．It follows a certain cycle.
B．It affects the growth of trees.
C．It has been increasing since the Ice Age.
D．It is determined by the chemicals in the air.
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单项选择题
A．The man doesn’t have money for his daughter’s graduate studies.B．The man doesn’t think Iris daughter will get a business degree.C．The man insists that his daughter should pursue her studies in science.D．The man advises his daughter to think carefully before making her decision.
A．The man doesn’t have money for his daughter’s graduate studies.
B．The man doesn’t think Iris daughter will get a business degree.
C．The man insists that his daughter should pursue her studies in science.
D．The man advises his daughter to think carefully before making her decision.
单项选择题
A．Because she thought the apartment was too small.B．Because it was the first apartment she had seen.C．Because her husband had not seen it.D．Because the rent was too high.
A．Because she thought the apartment was too small.
B．Because it was the first apartment she had seen.
C．Because her husband had not seen it.
D．Because the rent was too high.
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