题目

话题:“问题”是本模块的核心话题。写此类话题作文时要根据题目要求进行描述。假设你叫李明，你美国的笔友Tony遇到了一个难题，发邮件向你求助。请给他回一封邮件，提出解决问题的建议,80词左右。DearLi Ming, Myfriend Michael doesn't do well in chemistry tests. He often wants to copy myanswers. I don't think it is honest of him to do that. However, his parentswill punish him if he can't get a high score. I don't want Michael to get intotrouble. What should I do?Yours,TonyDearTony, Yours,LiMing甲、乙是两个不同的自然数，都只含有质因数2和3，并且都有12个约数，它们的最大公约数是12．则甲、乙二数之和是______．