7. No one but her parents _____ it.
A.know
B.knows
C.is knowing
D.are knowing
答案:B
对传播的要素之一受传者描述正确的是()
A.传播行为的引发者
B.在传播过程中信息的主动发出者
C.必须是个人
D.必须是群体
E.大量的受传者称为受众
Last year the number of students who graduated with a driving licence reached 200,000, a(n) ______ of 40,000 per year.
A.average
B.number
C.amount
D.quantity