( )是公民应履行的最根本的法律义务。
A．遵守宪法和法律
B．维护国家的安全、荣誉和利益
C．维护国家统一和民族团结
D．依法纳税
参考答案：A
. —I got an email from Susan, ______ said Ushe was going abroad for sightseeing.
—Fantastic! That’s what she has been dreaming of.
A．which
B．she
C．who
D．it
（）
A．1
B．0
C．-3
D．-5
（）