A
Are you getting enough protein（蛋白质）? The question provides its own answer: If you are worrying about the amount of protein in your diet, then you are almost certainly eating more than enough.
You merely need to visit a western supermarket today to see that many people regard protein as some kind of excellent medicine — one food companies are profitably adding to anything they can. “When the Box says ‘Protein’, Shoppers say ‘I’ll take it’” was the headline of a 2013 article in The Wall Street Journal.
The intensity of our protein obsession can only be understood as part of a wider series of diet battles that go back half a century. If we now thirst for protein as if it were water, it may be because the other two macronutrients — fats and carbohydrates — have each in turn been made to seem poisonous (有毒的) in the public mind.
In the current nutrition wars, protein has emerged as the last macronutrient left standing. David L. Katz, an American doctor and public health scholar who is the director of the Yale-Griffin Prevention Research Center said, “First they told us to cut fat. But instead of whole grains and lentils, we ate low-fat junk food.” Then food marketers heard the message about cutting carbohydrates and sold us protein-enriched junk foods instead.
For decades now, there has been a tendency to think about what we eat and drink in terms of nutrients, rather than read whole ingredients in all their complexity. A combination of diet fads and clever marketing has got us here. It doesn’t matter whether we fixate on “low fat” or “low carbohydrates” or “high protein” — we are making the same old mistakes about nutrition in a new form.
21. How does the author begin the article?
A. By raising a question.
B. By giving an assumption.
C. By describing a phenomenon.
D. By illustrating a typical case.
22. How many kinds of macronutrients does food provide us with according to paragraph 3?
A. Two B. Three C. Four D. Five
23. What is the author’s attitude towards protein according to the text?
A. Cold. B. Crazy. C. Sensible. D. Critical.
