Gwd 17-19(no related discussion found)

smileday

A diet high in saturated fats increases a person's risk of developing heart disease. Regular consumption of red wine rerduces that risk. Per-capita consumption of saturated fats is currently about the smae in France as in the United States, but there is less heart disease there than in the United States because consumption of red wine is higher in France. The difference in regular red-wine consumption has been narrowing, but no similar convergence in heart-disease rates has occurred.

Which of the following , if true, most helps to account for the lack of convergence noted above?

A) Consumption of saturated fats is related more strongly to the growth of fatty deposits on artery walls, which reduce bolld flow to the heart, than it is to heart disease directly.

B) Over the past 30 years, per-capita consumption of saturated fats has remained essentially unchanged in the United States but has increased somewhat in France.

C) Reports of the health benefits of red wine have led many people in the United States to drink red wine regularly.

D)Cigarette smoking, which can also contribute to heart disease, is only slightly more common in France than in the United States.

E) Regular consumption of red wine is declining dramatically among young adults in France, and heart disease typically does not
        manifest itself unitl middle age.

Key is E,

but, i don't know what's wrong with B?

 

mbz

The conclusion is that the difference in regular red-wine consumption has been narrowing,no similar convergence in heart-disease rates has occurred.

B) says per-capita consumption of saturated fats has remained essentially unchanged in the United States but has increased somewhat in France.

B cann't explain the paradox why there is no similar convergence in heart-disease rates

Hence, B is not related.

smileday

文:

Fat+ --> Heart disease+;

Wine+--> Heart disease-

Fat of France = Fat of USA; Wine of France > Wine of USA,

so, Heart disease of France < Heart disease of USA;

問: (Wine of France- Wind of USA) decrease, why no similar decrease between heart disease of the two countries?

my reasoning:

let Fat of France=100; Wine of France=30,so, heart disease of France=100-30=70

let Fat of USA=100; Wine of USA=10,so, heart disease of USA=100-10=90

difference:heart disease of USA- heart disease of France=90-70=20 (1)

Now, Wine' of USA=15(+5),so,heart disease' of USA=100-15=85

supposedly,

difference:heart disease' of USA- heart disease of France=85-70=15 (2)

however,(2)no happened,ask why?

according to (B),

Fat' of France=105(+5),so, heart disease' of France=105-30=75 

difference':85-75=10(decrease,similar.)

so, wrong.

according to (E), there are other factors, so, correctly.

I see, thank you.