2014
高考英语完形填空基础精品练习题（4）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 second world war, it became __28___ to set up blood banks. dr drew became _29___ of the red cross’s first blood bank. when the red cross __30___ blood banks to collect and store blood for men __31__
