单项选择题
Lighting levels are carefully controlled to fall within an acceptable level for
optimal
reading convenience.
A．ideal
B．required
C．optional
D．standard
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单项选择题
Factors leading to the crisis included poor regulation, mismanagement and deception in the industry, and competition from other types of financial firms.
A．cheating
B．pollution
C．depression
D．abuse
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单项选择题
Woman: Some people know a lot more than they tell.Man: Unfortunately the reverse is also true.Question: What does the man imply
A．Some people tend to conceal the truth.
B．Some people are prone to tell lies.
C．Some people are dishonest.
D．Some people tell a lot more than they know.
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