Mr. Rock teaches maths at a secondary school. He knows well of his neighbours except the man who lives next door. The man never speaks to anyone and no one knows what he does to make a living .

One day, when Mr. Rock came home from work , he found a gold necklace outside his door. Mr. Rock wondered where it came from. He thought that perhaps someone had dropped it. Mr. Rock planned to take it to the police station the next day. He thought the police would be able to find the owner.

Just then, the police came to Mr. Rock’s home and saw the necklace in his hand. Mr. Rock was very shocked when he was accused(起诉) of robbery(抢劫). A policeman told him that a jewellery shop had been robbed. A witness said that she had seen someone run from the jewellery shop into Mr. Rock’s building right after the robbery.

Mr. Rock was not the robber, but how could he prove it?

小题1:What’s Mr. Rock’s job? （不超过5个单词）____________________________________

小题2:Where did he find the necklace? (不超过3个单词) _______________________

小题3:Why did Mr. Rock feel shocked? (不超过6个单词) ________________________

醇酸浸渍漆采用的溶剂一般为（）。

A.二甲酚

B.煤油

C.二甲苯

D.环已酮