题目

It's the love and responsibility that have driven him to________many hardships and survive. A．go into  B．go through C．look through  D．look into 答案：B 考查动词短语辨析。go through 经历；经受；go into 进入；look through 浏览；look into 调查。句意：是爱心和责任使他经历了许多艰难困苦活了下来。一个长方体的底面是一个周长为20厘米的正方形，如果把高增加4厘米，就变成一个正方体．原来长方体的表面积是多少平方厘米？