—How come everything tastes bitter? —Well, things ________ taste different to you when you are suffering a cold. A.may B. should C. must D. would
图是研究电流产生热量的多少与什么因素有关的 实验装置。两个完全相同的烧瓶中装满质量相等的煤油，将电阻丝R1、R2分别放在甲、乙两瓶中，且R1
I bought a new MP4 player and it ______ me 500 Yuan. A．paid B．spent C．cost D．took
“沙琪玛”是人们喜爱的食品之一，右图是其标签中的一部分，其中小麦粉、鸡蛋、食用棕榈油依次富含六大营养素（蛋白质、糖类、油脂、维生素、
二氧化硫和氯气都有漂白作用，现把二者以等物质的量混合，让混合气体通过湿润的有色布条时，其漂白效果( ) A.缓慢褪色
单项选择 He _____ when the UFO arrived. A. was sleeping B. were sleeping C. has slept D. is asleep
，则f(10)值为（ ）
w.w.w.k.s 