My bike is broken, I need a new one. [ ]
A. or
B. but
C. because
D. so
答案：D
This kind of pot is _____ keeping tea hot. [ ]
A. used in
B. used for
C. used as
D. used by
以下( )属于真正的别墅。
A．联排别墅 B．叠拼别墅 C．空中别墅 D．独立式别墅
