数学:1提醒一下大家,那个1,11,111, 那道题目的表述是这样的 the nth term of the sequenee is the number of the same...大概你要自己退出来这个数列是这样的,不是直接给出的
2 八边形比七变形 对角线多几条,,这个题目表述是上来给你介绍一下什么叫做digonal~~~说什么1 to n-3..然后问的是polygon with 8 sides more? than polygon with 7 sides?
3 0.020<x+根号10《0。021 求1/根号10-1/x
4这个题目我的是个变体,,第二个是81
硬币有1,5,10,25,50分这些面额的种类。问多少个硬币可能凑成100分? 选项一 76 选项二 80 选项三 91 Discussion of greenhouse effects has usually focused on whether the Earth would harm and by how much,but climatologists have indicated all along that the most obivious effects, and those that would have the largest impact on people,would be extremes of temperature,precipitation and storminess. A. the most obivious effects, and those that would have the largest impact on people,would be extremes of temperature,precipitation and storminess. B. the effects that are the most obivious effects, extremes of temperature,precipitation and storminess,would be those impacting the most on people. C. those effects to have the largest impact on people,extremes of temperature,precipitation and storminess,are what are the most obivious effects. D. extremes of temperature,precipitation and storminess,the most obivious effects,that they would have the largest impact on people. E. extremes of temperature,precipitation and storminess,which are the most obivious effects,are those to impact the most on people. 我选A。。