One evening Mr Harris was on duty when the phone rang.He wen

One evening Mr Harris was on duty when the phone rang.He went to answer it.It was Mrs Green.
“Please,sir,come to my house.I had 5,000 dollars stolen.”
Mr Harris hurried to her house.He asked Mrs Green,“When did you find the money missing?”
“At seven,I put my money on the table in the living-room.Then I went to wash my hair.I came back at seven thirty and the money was gone.”
“I see,”Mr Harris said.“Were you alone in the house?”
“No.My sister's daughter,Nancy,was here,too.”
“Let's talk to Nancy,”said Mr Harris.They went to Nancy's room.
Mr Harris sat on the only chair in the room.The chair was cold.Mrs Green and Nancy sat on the bed.Mr Harris saw some books on the floor near the chair.
“What have you been doing this evening?”
“I've been studying because I shall have a test tomorrow.I've been sitting on that chair reading all the time.I never got up and never left my room.But at about seven fifty I heard a sound,like someone closing the door.I didn't go out to have a look,for I was too busy.Maybe someone came into the house and took my aunt's money.”
After hearing that,Mr Harris was quite clear.He said to Mrs Green,“Well,you won't have to be worried,and you'll find the 5,000 dollars just in this room.”
问 what was the evidence to judge the thief?
A,The books B,the cold chair C,the test D,the bed

B.
文中：Mr Harris sat on the only chair in the room.The chair was cold.
哈里斯先生坐在房间里唯一的椅子上,这把椅子很凉.
而南希说：I've been studying because I shall have a test tomorrow.I've been sitting on that chair reading all the time.I never got up and never left my room.因为明天我有考试,我一直在学习.我整天坐在椅子上看书,从没起来过,也没离开过我的房间.
这是互相矛盾的,若南希一直在椅子上看书,椅子应当尚有余温,不可能是凉的.
再问： 谢谢 不过你还知道这阅读的所有答案么= =
再答： 还有什么阅读呀，我没有题目，不过可以翻译给你听。
再问： 1。when was mrs greens money lost？ A，at seven B，at seven thirty C ，at seven fifty D，between seven and seven thirty 我选D 的 对么
再答： 是的，应当选D。