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阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。
(2020·衡水中学一模)
Eating a diet rich in high-quality protein may help you maintain a healthy weight by 41 (make) you feel full longer，and fueling you with extra energy for exercising.
High-protein 42 (diet) aren’t balanced in terms of the essential nutrients，vitamins, and fiber your body needs.However，a diet that is too high in animal protein can 43 (actual) lead to weight gain over time.A study found that those who ate more red and processed meat put on 44 (much) weight, about one extra pound every four years，while those who ate more nuts over the course of the study 45 (gain) only half as much weight.
Some people are able to lose weight on high-protein diets in the short-term but this weight loss is not due to eating more animal protein， 46 simply due to consuming fewer calories.A safer way 47 (lose) weight is to reduce sugar intake and calories，while maintaining a nutritionally balanced diet 48 is rich in plant-based proteins.
For most of us，consuming the right balance of wholefoods each day will provide us 49 all the nutrients we need.There is also no 50 (evident) that protein from a powder or bar can improve athletic performance any more than protein from food.
【答案】 41.making 42.diets 43.actually 44.more
45．gained 46.but 47.to lose 48.that/which 49.with 50.evidence
