零售商间搭便车问题属于（）.
A.横向外部性
B.竞争问题
C.租金转移问题
D.纵向外部性
参考答案：A
某公司职员每月工资5000元，该职员每月应缴纳个人所得税( )元。
A．205
B．330
C．370
D．460
用所给单词的适当形式填空。
1. I don't like ______ (he) room. It's too small.
2. I need a pair of black ______ (sock) to go with my new shoes.
3. We hope ______ (arrive) at the airport around two o'clock.
4. This dictionary is not ______ (I). It's Jane's.
5. You are so _______ (luck) to have the chance to visit Michael Jordan.
