六级阅读

12.06 Section B 　　Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice and mark the corresponding letter on Answer sheet 2 with a single line through the centre. 　　Passage One 　　Questions 52 to 56 are based on the following passage. 　　As anyone who has tried to lose weight knows, realistic goal-setting generally produces the best