1． For all values of Y,let Y☆be defined by Y☆=y平方-1,what is the value of (Y☆)☆?
2.fifty percent of the songs played on a certain radio station are 3 min long ,30% are 5 min long,and 20 percent are 2 min long .what is the average number of minutes per song played on?
3.if Y is inversely proportional to X and y =15 when x=5 what is the value of y when x =25?答案：3
The painter launched the evanescence of beauty,even though she seemed in several of her works to have ? it as it paused and so ? it for posterity.
A. seised---absolved B.arrested----preserved为什么选B不选A？
while the movie employs stock charasterizations,admirers argue that it is ---even if its depictions are---
The speaker---frequntly,but these tangents were the most entertaining parts of the presentation.
A. gestured B.digressed 为什吗选B不选A啊？
The mayor’s reelection by an overwhelming majority was not so much an endorsement of his administration’s -----as it was a ----of his opponents’s extreme views
A. program---vindication B.adversities----denunciation
No---the case exists:in reaching a decision ,the court is bound to break new legal ground.
A.authetication of B.demand for C.precedent for答案选C但是我觉得都了可以啊。
Max is regared as a ---of modern jazz drumming because he was one of the first artists to ---the melodic,rather than merely rhythmic possibilities of his instrument.