His friend doesn't _____ ice cream. [ ]
A. like
B. likes
C. liking
D. be
答案：A
油罐进油前检查各阀门是否处于（）状态。
A、全开
B、半开
C、微开
D、关闭
好发于患有舍格伦综合征患者的龋病称
A．隐匿龋
B．静止龋
C．猖獗龋
D．根面龋
E．环状龋
