【单选题】集合A={1,2,3},那么A集合最多有多少个子集( )
【简答题】集合A={1,2,3},那么A集合最多有多少个子集( )
【简答题】集合A={1,2},那么A集合最多有多少个子集( )
【多选题】After you have read the material, do you know what techniques writers usually use to write the concluding paragraph of essays?
A.
Sum up the main points
C.
Make some suggestions of actions
D.
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【多选题】不可压缩液体,是指在压力作用下可以忽略( )变化的液体。
【单选题】What do most creative writers have in common?
【简答题】What do famous writers, painters and moviemakers have to give up in order to maintain their fame and fortune, according to the writer?
【简答题】What do writers have to depend on when they describe an object? Why?