According to the article, those who designed the tower could have done better if ______.
A. the tower lasted longer after being attacked
B. the tower hold stable until all of the people there managed to escape
C. the tower can be immune to such attacks
D. they considered more about the effects of the very' high temperatures and make duel changes in the structure
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The author believes that the Twin towers ______.
A. were not well-designed
B. were well-designed
C. were good examples for engineers of our time
D. were out of consideration when we talk about engineering later
The word "ignition" (Line 5, Para. 1 ) means" ______".
A. fierce crash
B. causing to catch fire
C. failure of engine
D. extremely hot condition
多尿是指24h尿量多于
A. 1000ml
B. 1500ml
C. 2000ml
D. 2500ml
E. 3000ml
男性患者,72岁,查体见角膜边缘及周围出现灰白色浑浊环,是由于下列何种原因所致
A. 类脂质沉着
B. 铜代谢障碍
C. 铁代谢障碍
D. 维生素C缺乏
E. 白内障