9999999+10000000+··· +99999999

9999999+10000000+··· +99999999 ···· · · · ···· ·········· ·········· 求··············· 什么植物有应激性只要植物名 ········································································································· 急·························· 急 ··············急············ 0.333333333···（无限个3）乘3=0,9999999···（无限个9）还是1呢? 这是什么蛾类昆虫?如题请给予回答··········································································· 写一个关于动物的拟人句急急急呀······································································································ 怎样计算摩尔质量?要详细啊························································· 是正确答案,希望!急需·······································································我涨加了，快······························ 寒冬腊月的意思急啊·····································································································