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【单选题】
设有球面 ,则该球面A.
球心在(-1,2,0),半径为2
B.
球心在(1,-2,0),半径为2
C.
球心在(-1,2,0),半径为
D.
球心在(1,-2,0),半径为
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举一反三
【单选题】The word "phenomenon" in the second paragraph means .
A.
accident
B.
event
C.
incident
D.
misfortune
【判断题】Exposition means expounding or explaining, which explains or explores something, such as the process of making a machine, the causes of a natural or social phenomenon, the planning of a project, or th...
A.
正确
B.
错误
【单选题】The linguistic form in originally used as a preposition or adverb has been used to form words like sit- in , teach- in , love- in , where -in means “demonstration, protest”. Which statement concerning...
A.
Two separate words can be joined to form a new word, with the original meaning of the component shifting.
B.
This is a right instance of using an existing word as an affix.
C.
Morphemes are not close-ended, that is, new morphemes are being continuously created.
D.
The status, function and meaning of “in” have changed in this process known as morphemization.
【简答题】The buzz word for this phenomenon is cloud computing, which means that many applications no longer rely on operating systems. Rather, they run on the Web and may be accessed through a browser.
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