2014
高考英语完形填空抓分练习精品题（19）及答案完形填空 charles r. drew was a medical student at columbia university in new york. before he graduated, he wrote an article __26___ blood bank, that is, the storing of blood. up till then, a lot of people had died from loss of blood __27___ there was no blood bank. when the united states entered the seco
