摘要：Dr. Baker was surprised to receive an invitation to the 2008 Medical Conference in London. He looked at his diary and found he would be free that week. He decided to 36 the meeting, so he wrote to the conference 37 that he would be there. People who he knew 38 the conference were 39 to see him. The following morning, the main speaker didn’t appear. Her plane would be late 40 bad weather. So the organizer asked if there was a Dr. Baker there and asked him to make himself 41 . Dr. Baker went up and offered him his help. The organizer invited him to give a talk about DNA. But it happened that Dr. Baker knew 42 about DNA. The organizer was so surprised to hear that 43 he said everyone there knew he was an 44 on the subject and read Peter Baker’s book “Introduction to DNA . Dr Baker said that he was not Peter Baker, but David Baker, to be 45 . 36 A. join B. take part C. attend D. come 37 A. said B. say C. and saying D. saying 38 A. at B. of C. on D. with 39 A. excited B. anxious C. worried D. surprised 40 A. because of B. because C. as D. of 41 A. knowing B. knew C. known D. know 42 A. something B. nothing C. everything D. anything 43 A. what B. that C. then D. when 44 A. learner B. teacher C. expert D. professor 45 A. certain B. exactly C. certainly D. exact

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