题目

At the press conference, the officer didn’t explain       . A. them the cause of the murder B. them of the cause of the murder C. the cause of the murder to them D. the cause of the murder for them   答案：Cexplain不可以带有双宾语，只可以说explain sth. to sb.。有一位建筑师，想要建造一座房子，要求房子四面的窗户都向着北方,你认为应该建在A．北极点上B．南极点上C．赤道和0°经线的交叉点D．赤道和180°经线的交叉点