【解答】
Ⅳ [出典:Robert F. Whittier, Ph.D., Professor, Juntendo University Faculty of Medicine]
問1
(1) ③ random
(2) ① stocks
(3) ① problems
(4) ③ named
(5) ④ strong
問2
(1) ② Macronutrients provide energy while micronutrients meet other needs.
(2) ② Health concerns prompted the discovery of vitamins.
(3) ③ Humans have a complicated relationship with B12.
(4) ① A lack of "longevity vitamins" will not immediately cause severe problems.
(5) ② Vitamins: do we have the complete list?
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