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【简答题】
设有限集合 ，则 叫做集合 A 的和，记作 若集合 ，集合 P 的含有3个元素的全体子集分别为 ，则 = ．
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皮皮学刷刷变学霸
举一反三
【简答题】I have read the material several times but it doesn't make any ________ to me. A meaning B. importance C. sense D. significance
【单选题】What is a proper "Read and Retell" material?
A.
Legal documents
B.
Government reports
C.
Social news
【简答题】从环境因素的可控程序看，可把决策分为______决策、______决策和______决策。
【单选题】I have read the material several times but it doesn't make any ______ to me.
A.
meaning
B.
importance
C.
sense
D.
significance
【单选题】In the author's opinion______.
A.
advertising can seldom bring material benefit to man by providing information
B.
advertising informs people of new ideas rather than wins them over
C.
there is nothing wrong with advertising in persuading the buyer
D.
the buyer is not interested in getting information from an advertisement
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