问题：
[单选题] In spite of the wide range of reading material specially written or _____ for language learning purp
A、adaptedB、acknowledgedC、assembledD、appointed问题：
[单选题] IP组播是对硬件组播的抽象，是对标准IP网络层协议的扩展。以下描述中错误的是（ ）
A、组播地址通常为D类IP地址B、组播组中的成员是动态的C、发送方不必是组播组成员D、路由器需要向所有接口转发组播报文问题：
[单选题] Is the honest man laid _____ in hard times less of a success than the swindler who's making money?
A、offB、awayC、lowD、down问题：
[单选题] It is _____ that the report be submitted to the Headquarters before the deadline.
A、essentialB、innovativeC、involuntaryD、eternal问题：
[单选题] It is always much better to tell a story than read it out of a book, and, if a parent can produce wh
A、conditionB、situationsC、circumstancesD、state of affairs问题：
[单选题] It says she has been studying Chinese for three months and _____ for China in a month.
A、had been studying; visited; is leavingB、studied; had visited; will live inC、has studied; visited; would leaveD、was studying; has visited; leaves问题：
[单选题] It was _____ the chief engineer came _____ we began the experiment.
A、not until; thatB、not until; thenC、until; thatD、until; when问题：
[单选题] -It was an interesting exhibition， wasn′t it？-No， it was very uninteresting.Which maxim of the Polit
A、The tact maximB、The modesty maximC、The agreement maximD、The sympathy maxim问题：
