血清学试验的前带现象是指（）。A．抗体过量 B．抗原过量 C．凝集明显 D．沉淀物显 发布时间：2017-05-21 05:29 │ 来源：www.tikuol.com 题型：单项选择题 问题： 血清学试验的前带现象是指（）。A．抗体过量B．抗原过量C．凝集明显D．沉淀物显著E．溶解现象
题型：单项选择题 阅读理解。 Mr.Coates works in an office in Brighton, England. One Saturday, he went to the office to do some work. When he got on the lift, it stopped between floors. Mr. Coates could not get out of the lift. He startedto shout, but no one heard him. Then Mr. Coates remembered that it was a holiday in England. No one was going to come to work until Tuesday! There was nothing for Mr. Coates to do. He had to wait. With nothing to eat or drink, Mr. Coates sleptfor most of the time. Early on Tuesday morning, his workmates came into work and found the lift was notworking. When the lift was opened, Mr. Coates came out. He was cold, weak, and tired. He had been in thelift for 62 hours! Now Mr.Coates says, "I only use lifts if they have telephones in them." 1. Why couldn't Mr.Coates get out of the lift? Because . [ ]A. something was wrong with the lift B. it was the weekend C. it was in an office D. it was a holiday 2. In the lift, there was . [ ]A. food B. water C. a telephone D. nothing3. What did Mr.Coates do in the lift? [ ]A. He shouted. B. He slept. C. He waited. D. All of the above.4. How long was he in the lift? [ ]A. For more than two days. B. For the whole Saturday. C. For the weekend. B. Since last Tuesday. 5. According to the story, which of the following is true? [ ]A. Now Mr.Coates is a little afraid of taking a lift. B. Now Mr.Coates likes taking a lift. C. Now Mr.Coates never uses lifts. D. Now Mr.Coates only uses lifts if they have no telephones in them. 查看答案