It was a winter morning, just a couple of weeks before Christmas 2005. While most people were warming up their cars, Trevor, my husband, had to get up early to ride his bike four kilometers away from
（08年浙江卷理）（本题14分）已知数列，，，．记：．．求证：当时，（Ⅰ）；（Ⅱ）；（Ⅲ）．
—How about going shopping on Sunday? —_______. A. Yes, I will B. Thank you C. That’s a good idea D. Yes, please
某男性色盲，它的1个次级精母细胞处于后期时，可能存在 A．2个Y染色体，2个色盲基因 B．1个Y，1个X，1个色盲基因 C．2个X染色体，2个色盲基因
设变量x，y满足约束条件：，则目标函数z=2x+3y的最小值为（ ） A．6 B．7 C．8 D．23
物体在平面镜中成像的大小取决于 A．物体到镜面的距离 B．物体的大小 C．平面镜的大小 D．观察者的位
