单项选择题17()
A.doer B.receiver C.performer D.speaker
单项选择题Specialization and the effort to increase yields have resulted in ______.
单项选择题In the last sentence of the first paragraph, the word lists could best be replaced by______.
问答题到了这个时候,他的餐馆本该宾客盈门。
单项选择题Research shows that people’s physical and mental health______.