Shown in the set of three pies are the average percentages of three substances consumed in Americans’ meals. in general, there are apparent similarities and notable differences.
First, the similarity between the intake of sodium and that of saturated fat is marked: in dinner, American people take in the largest portion (43% and 37% respectively) of a day’s whole amount of the two nutrients they consume. The second highest daily intake of sodium (29%) happens in lunch and is twice of the intake when Americans eat breakfast or snacks. Third, in terms of the consumption of saturated fat, there are no wide variations but a 5% difference between the meals except dinner.
The case with added sugar is vastly different. 42% – a predominating percentage – of added sugar is taken in during eating snacks, making a sharp contrast with the 16%-23% during the three regular meals.
Overall, since those substances may cause health problems if eaten in excessive amounts, Americans should be most careful when they eat dinner and snacks.
这个结尾段落的写作内容有一些难度。难点在于超越了数字，去解读数据暗示的信息（但是注意，这个解读是安全的，是基于题目中的“all of which may be unhealthy if eaten too much”而来的）。