下面短文中有10处语言错误。请在有错误的地方增加，删除或修改某个单词。

增加：在缺词处加一个漏字符号（∧），并在其下面写上该加的词。

删除：把多余的词用斜线（\）去掉。

修改：在错的词下画一横线，并在该词下面写上修改后的词。

注意：1 每处错误及其修改均仅限一词；

2 只允许修改10处，多者（从第11处起）不计分。

A famous scientist was in his way to other lecture when his chauffeur (司机) offered an idea. “Hey, boss, I’ve heard your speech many time. I bet I can deliver it and give you this night off.” “It sound great,” said the scientist. When they got to lecture hall, the scientist put up the chauffeur’s hat and settling in the back row. And then the chauffeur began to deliver the speech. Afterwards he asked if there were some questions. “Yes,” said a professor. Then he asked a very technically question. The chauffeur was nervous for a moment but quickly recovered. “That’s an easy one,” he replied. “I’m going to let my chauffeur to answer it.”

张某两年前购买了一套建筑面积为120m²、单价为4000元/m²的住房，首付40%，另外60%向银行申请20年期贷款，贷款年利率为6%，采用按月等额本息还款方式还款。银行为规避风险，要求张某办理了与住房贷款相结合的人身保险。

按照银监会规定，个人住房贷款的月房产支出与收入比不得超过（）。

A．25%

B．30%

C．50%

D．55%