—Which is ______ city in China?
—Shanghai. [ ]
A. big
B. bigger
C. the biggest
答案:C
Tom took a taxi to the airport, only _____ his plane high up in the sky.
A.finding
B.to find
C.being found
D.to have found
不属于内脏的系统是()
A.泌尿系统
B.脉管系统
C.生殖系统
D.呼吸系统
E.消化系统