請教一道advanced explain題

Carol凡凡 发表于 2020-4-1 10:47
还是会升高，但是protein会让血糖升高的幅度没有那么大~

Argument Construction

This question requires us to identify an explanation for nutritionists' lack of
concern regarding consumption of beets and carrots, despite the fact that they
have higher sugar levels than many other vegetables and rate high on the
glycemic index.
Normally, nutritionists would advise people against consuming foods that rate
high on the glycemic index, whatever their other nutritional benefits.
To explain why nutritionists might hold such apparently conflicting positions,
consider whether there might be something notable about the consumption of
beets and carrots that makes their consumption an exception to the rule.
A. The fact that some foods may be even more problematic than beets and
carrots does not explain nutritionists' lack of concern about beets and
carrots.
B. Correct. This provides a reason that consumption of beets and carrots
may be, at least within the suggested context, exempt from nutritionists'
concern about consumption of high-sugar, high-glycemic-index foods.
Remember, nutritionists' general concern arises from the effects such
foods have on those who consume them. If we suggest that beets and
carrots are usually consumed with high-protein foods that counteract
these unwanted effects, we have good reason not to be concerned about
their consumption, at least in regard to their sugar level and glycemic
index.
C. The nutritionists advise people to avoid foods high in sugar and high on
the glycemic index despite any nutritional benefits they may confer.
Therefore, the fact that beets and carrots have such nutritional benefits
does not explain why nutritionists would not be concerned about
consuming beets and carrots, given that they both high in sugar and rate
high on the glycemic index.
D. Whatever measure the glycemic index is based on, we know that beets and
carrots are high on that index. Furthermore, we know that nutritionists
usually advise people to avoid high-sugar and high-glycemic-index foods,
despite any nutritional benefits they may confer. Therefore, the fact that
beets and carrots are more nutritious than white bread does not in any
way explain the nutritionists' lack of concern.
E. The fact that nutritionists have only recently become concerned about
high-sugar and high-glycemic-level foods does not explain their particular
lack of concern regarding beets and carrots.
The correct answer is B.