Li Ming's mother is a _____________. [ ]
A. teacher
B. doctor
C. nurse
D. driver
答案:B
A breeze (微风) ____ the quietness of the lake. [ ]
A. interrupted
B. disturbed
C. bothered
D. troubled
电脱盐罐工作压力()设计压力。
A.等于
B.高于
C.低于