相比之下,中世纪鼎盛时期被认为整个中世纪最黑暗的时期。()
A. 对
B. 错
“nodding acquaintance”可以译成______
A. 点头之交
B. 点头哈腰
C. 易如反掌
D. 对牛弹琴
“inform”的名词是_______
A. introduction
B. introduce
C. informal
D. information
The clerk has no problem ______ with any kind of customers.
A. deal
B. to deal
C. deals
D. dealing