监理工程师可以用保留金支付属于( )的合同义务而发生的费用。
A．施工单位
B．建设单位
C．材料供应单位
D．设计单位
参考答案：A
若a的值为1，则表达式!a‖++a的值是______。
Man: Mr. Brown asked me to tell you that he’s sorry, he can’t come to meet you in person. He’s really too busy to make the trip.Woman: That’s OK. I’m glad you’ve come in his place.Question: What do we learn from the conversation().
A. The man is late for the trip because he is busy.
B. The woman is glad to meet Mr. Brown in person.
C. The man is meeting the woman on behalf of Mr. Brown.
D. The woman feels sorry that Mr. Brown is unable to come.
