My husband had just bought a new washing machine for me . I decided to use it the very day and I washed a lot of things . Everything worked well , but I found one of my husband’s socks(短袜)  missing . I looked everywhere for it , but I couldn’t find it anywhere . The next morning , I got ready for school as usual . When the bell rang , the students came in . I greeted them and told them what we were going to do that day . When I turned around to write on the blackboard , the class bursted out a roar (大笑声)! They laughed and laughed . They laughed so much , in fact ,that I was afraid the headmaster would be in to see all this . I asked the class to stop , but the more I talked , the more they laughed . I decided to pay no attention to them and I continued to write on the blackboard . when I did this , they roared even more . Finally , the teacher who had the room next to mine came in to see what all the laughter was about . “Good heavens ,” I said , “Will someone please tell me what is so funny?” “Oh , God,” said the teacher , “You have a brown sock to the back of your skirt !” So that’s how I found my husband’s missing sock . “Oh , well ,” I said to the class , “Let’s just say you have had an unforgettable lesson on static electricity(静电)。” 小题1:What was the writer ? A．A washer B．A student C． A headmaster D． A teacher 小题2:What happened when the writer turned around to write on the blackboard ? A．The class roared with anger . B．The class began to laugh loudly . C．Another teacher came in D．There was a loud noise outside the room 小题3:Why couldn’t she find one of her husband’s socks? A. Because some students had hidden it . D. Because her husband had taken it away . C. Because she had left it in the classroom . D. Because she never expected that it would stick to her skirt . 小题4:What did the writer do when she got to know why her students laughed? A．She did nothing but laugh. B．She got angry with the class . C．She did nothing D．She explained the matter in a clever way .