货物运输变更到站，新到站对费用及票据如何办理？

房地产被当作一种资产被家庭和企业持有和交易，其目的是获取投资收益。()

There they met two Indian monks who were Buddhist masters and ______ as educators without salary. [ ]

A. were working

B. worked

C. have work

D. had worked

水稻害虫有多种，是单食性害虫的是（）。

A、二化螟

B、褐飞虱

C、白背飞虱

D、灰飞虱

总结一般用第三人称写作。

程控交换机的数据主要有（）、局数据、用户数据。

A.系统数据

B.外部数据

C.硬件数据