皮皮学，免费搜题
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【单选题】
以下不是计算机网络功能的是( )A.
资源共享
B.
数据信息的集中和处理
C.
分布式处理
D.
规范化信息和处理
拍照语音搜题，微信中搜索"皮皮学"使用
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【简答题】My father is a strong fisherman. He loved the sea and would stay out until he caught enough to 16 the family . When we met 17 weather , he would drive me to school with his old truck . And after we 18...
【单选题】We ____ here two hours ago . We ____ here for two hours . [ ]
A.
have arrived, have been
B.
have come, have been
C.
came, have come
D.
arrived, have been
【简答题】My grandmother is a village woman. She is already in her sy. Although she received little school education, but she is aware that knowledge is of great important lo young people. When my father w...
【单选题】What does 'we have been 'twiddling the knobs' for decades' mean?
A.
We have been changing the climate with thoughtless actions for decades.
B.
We have been handling machines with poor skills for decades.
C.
We have been following a misleading chapter about the earth for decades.
D.
We have been mistaken in the belief in developing the agricultural infrastructure.
【简答题】We appear to have been given the wrong address. as It ____________________ we have been given the wrong address.
【多选题】网络计划技术的优点有（ ）
A.
可对工程的时间进度与资源利用实施优化
B.
可事先评价达到目标的可能性
C.
便于组织和控制
D.
易于操作，具有广泛的应用范围
E.
可以清晰地表明整个工程的各个项目的时间顺序和相互关系，并指出了完成任务的关键环节和路线
【单选题】Seldom______ in such a rude way.
A.
we have been treated
B.
have we been treated
C.
we have treated
D.
have we treated
【单选题】We ______ for you everywhere. Where have you been?
A.
have looked
B.
looked
C.
have been looking
D.
are looking
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