问题
单项选择题
Machines that use hydraulic pressure including elevators, dentist chairs, and automobile brakes.()
A. exclude
B. excluding
C. include
D. are included
答案
参考答案:C
解析:
结构应用。
划线部分应填本句的谓语动词(machines是主语,that use hydraulic pressure是定语),根据句意,谓语动词应表“包括”之意,且在此不表被动,因此选项C是答案。