把命题“当x=2时，x2-3x+2=0”写成“若p,则q”的形式，并写出它的逆命题、否命题与逆否命题，并判断其真假.
I live in a nice new building in Beijing. It is very tall. It has eighteen floors. There are about eighty families in the building. That is to say (也就是说), about two hundred and forty people
改革开放以来，富裕起来的山东人保持了把在酒楼、饭店吃不完的东西“打包”带回去继续享用这一优良传统，而且这种观念已经被越来越多的中国人
没有稳定收入的人士很难申请到银行发行的信用卡，因为银行信用卡是（ ） A．商业银行对年满18周岁的客户发行的一种信用凭证 B．商业银行
空气是人类生存所必需的重要资源。为改善空气质量而启动的“蓝天工程”得到了全民 的支持。下列措施不属于“蓝天工程”建设的是（ ）
“In the old days,” as one wife said. “ The husband was the husband and the wife was the wife.” In the past husbands each had their own way of going on. The wives’ jobs were to look after t
下图是某家族遗传系谱图。设甲病显性基因为A，隐性基因为a；乙病显性基因为B，隐性基因为b。据查Ⅰ-1体内不含乙病的致病基因。 （1）控制遗传病甲
p{font-size:10.5pt;line-height:150%;margin:0;padding:0;}td{font-size:10.5pt;}（08年潍坊市质检文）（14分） 已知（m为常数，m>0且），设是首项为4，公差为2的等差数列.
的图象是 
