根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Weight loss is a hard topic. Lots of people aren’t satisfied with their present weight, but most people aren’t sure how to change it. You may want to look like the models or actors in magazines or on TV, but those goals might not be healthy or realistic(现实的) for you .___76_
So what should you do about your weight control?
77 The best way to find out if you are at a healthy weight or if you need to lose or gain weight is to talk to a doctor or dietitian（营养学家)._78____If it turns out that you can benefit from weight loss then you can follow a few of the simple suggestions listed below to get started.
