题干

下列说法正确的是

A:测定中和热时,所用稀NaOH溶液和HCl的物质的量恰好相等,以减小实验误差

B:NaHSO4固体受热变为熔融状态(未发生化学反应),需要克服的作用力有:离子键和共价键

C:在Fe(OH)3胶体中通电,一段时间后,阴极附近颜色加深

D:用蒸馏的方法分离淀粉溶液与Cu(OH)2悬浊液的混合物

上一题 下一题 0.0难度 选择题 更新时间:2020-02-13 02:56:33

答案(点此获取答案解析)

C

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选择合适的选项完成短文。

    The key to losing weight is to understand what really motivates you. have you ever been excited about losing a few pounds?____ And to help you keep your weight under control, you need some coping strategies.

    Ask questions. When you're researching different dieting products and plans or even talking to a doctor about diets, ask as many questions as you can.____Ask questions like: Do I have to purchase special meals or supplements? Does the program include a part to help me maintain my weight loss?

    Get real.____Don't burden yourself with unrealistic expectations. Remember, large amounts of weight loss are not realistic and are most likely not safe or healthy. Talk with your health care professional to determine a healthy weight goal.

    ____To maintain your weight, you must balance your intake of calories with the energy you burn. Just 30 minutes of fast walking in most days can take about 10 pounds off your weight each year.

    Weight yourself weekly. It's important to track your weight on any diet or weight loss plan, but don't get on the scale every day. weighing daily won't show you the big picture.____

A. Stay balanced.

B. Once a week is fine.

C. Stick with your healthy eating plan.

D. Losing one to two pounds a week is a realistic goal.

E. Being well informed will help you choose the best diet for you.

F. Regular weight check-ins will show you your progress over time.

G. If so, you must find a way to turn that excitement into determination.