B.many of us need to think twice about our eating habits
C.people do not need extra vitamins if they have a normal diet
D.people must have extra vitamins as a safeguard against illnesses
正确答案：C
解析：原文明确指出：’The Food Standards Committee suggests in their recent report to the government that we do not need any extra vitamins. They say that they are “not necessary for a healthy individual eating a normal diet”.’
解析：原文指出：’Alcohol is also high in calories, but beer and wine contain some of the B vitamins and wine is a good source of iron, so even a teetotaler could not describe all alcohol as useless, nutritionally speaking.’ 表明不能一概而论将酒精归为“垃圾食品”。
B.white sugar and meat should not be eaten together
C.alcohol is a good companion for foods like fish and meat
D.we need to measure calories contained in the food before we eat it
正确答案：A
解析：末段指出：’Buying vitamins can be predicted by psychological as well as nutritional motives and it is prudent to investigate why we think we need them and what benefits we expect from them before we rush off to the health shop to make our purchases.’ 即反对盲目购买维生素。
A.pays much attention to her daughter’s academic achievements
B.is sensitive and is ready to protect her children at any time
C.has much confidence in her children
D.is honest and trustworthy
正确答案：A
解析：文中多次体现：’Marianna’s parents, her teachers, society at large—we are all implicated…’；’Marianna is very smart and high-achieving, and her mother reminds her of that on a daily basis.’ 明确指向母亲重视学业成就。
A.the whole society are involved in the crime against learning
B.teachers should be blamed for students’ loss of strengths
C.parents kill their children’s interest in grades
D.children are not born to love learning
正确答案：A
解析：原文直接陈述：’Her child has sacrificed her natural curiosity and love of learning at the altar of achievement, and it’s our fault. Marianna’s parents, her teachers, society at large—we are all implicated in this crime against learning.’
A.Teachers usually stimulate their students to face new challenges.
B.Children will never learn anything if they fail in their scientific inquiry.
C.Marianna never wins praise for the effort she puts into problem-solving.
D.Parents usually encourage their kids to solve the problems independently.
正确答案：C
解析：原文明确指出：’However, Marianna does not get praised for the diligence and effort she puts into sticking with a hard math problem or a convoluted scientific inquiry.’
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