My bike is new, but ______ is old. [ ]
A. his
B. he
C. him
D. her
答案：A
The movie is so _______ that I am very _________ in it.
A．interesting, interesting
B．interested, interested
C．interesting, interested
D．interests, interested
管路系统的特性曲线是随着（）的增加而上升。
A、流量
B、扬程
C、轴功率
D、效率
