Based on the text, judge the following items.
by 2050 (line 4) means that 2050 is the deadline.
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The idea expressed by should in we should inform the population (lines 4 and 5) can also be expressed by ought to.
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In some pathological eating disorders (lines 6 and 7), some means a few.
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In line 8, the s in diets is pronounced as the s in foods.
Based on the text, judge the following items.
In paragraph 1, according to some doctors, fad diets have recently contributed to making the obesity issue much worse.
Based on the text, judge the following items.
Both yet and nevertheless express the same idea as However in paragraph 2.
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The nutritional content of these fad diets is so complex because they are based on a scientific theory.
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rarely (line 20) means seldom.
According to the text: 
All options are correct, EXCEPT: 