单项选择题

A．Projected changes in the building code.
B．Design features of modem skyscrapers.
C．Strategies for reducing traffic jamming.
D．Methods of estimating construction costs.
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单项选择题
A．Greg used to be so informal in his dress.B．Greg used to be very formal in his dress.C．Greg is normally not very conscious of his style.D．Greg spent 180 dollars on his new leather jacket.
A．Greg used to be so informal in his dress.
B．Greg used to be very formal in his dress.
C．Greg is normally not very conscious of his style.
D．Greg spent 180 dollars on his new leather jacket.
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