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解析：A: When you register at an exhibition, there are several things you should pay attention to. First you must find out the money you pay to go into the exhibition. When you have paid for the registering, the exhibition assistance will show you your number of stand. You can go to have a look at your exhibition place, if you are not satisfied with the place, you can ask the exhibition assistance to replace your spot. At last, the exhibition assistance will give you your exhibition badges and information pack. B: When you find a job, it is important to write your resume at first. In your resume, you must make sure that all of your written information makes a positive impression on the interviewers. Then when you get a chance to have an interview, you must think the interviewers’ questions carefully and express yourself clearly and fast, proving that you are the best for the job. During the interview, you should also pay more attention to your body language showing that you are interested in the job.