大学综合英语第二册Unit3文章思维导图

大学综合英语第二册课本Unit3课文思维导图。对The Healthy Eating Pyramid文章的拆分解读，梳理了每个自然段的写作目的和关键字词。为老师们提供教案写作思路。

The Healthy Eating Pyramid

• The First layer (basic layer)
  • Daily exercise
    • calories out
  • Weight control
    • weight change=calories in-calories out
      • strongly influence chances of staying healthy affect what you eat and how your food affects you
• The second layer
  • Whole grains
    • the best grain sources of carbohydrates(for energy)
      • beans vegetables fruit whole grains
        • oatmeal,whole wheat bread,brown rice
  • healthy eats and oils
    • good sources of healthy unsaturated fats
      • canola,olive,soy,corn,sunflower peanut,other vegetable oils trans fat-free margarines,nuts seeds,avocados,fatty fish(salmon)
  • vegetables and fruits
    • A rich diet in them has bountiful benefits
    • functions
      • heart attack,stroke,some types of cancers low blood pressure,diverticulitis,cataract macular degeneration,vision loss of old people add variety to your diet,wake up your palate
• The third layer
  • nuts,seeds,beans and tofu
    • plant foods
    • Beans
      • black beans,navy beans,garbanzos,lentils
    • Nuts
      • almonds,walnuts,pecans,peanuts hazelnuts,pistachios(good for heart)
        • nuts and beans can lower the risk of heart diseases and diabetes
  • fish,poultry,eggs
    • >important sources of protein
      • fish~heart healthy omega-3 fats>heart diseases
      • chicken and turkey~protein>low in saturated fat
      • eggs~high levels of cholesterol
        • people with diabetes or heart diseases avoid egg yolk instead egg whites
• The fourth layer
  • Dairy 1-2servings per day or Vitamin D/calcium supplements
    • building strong bone~take calcium,vitamin d,exercise
• The fifth layer
  • Use sparingly
    • white bread,rice,pasta;potatoes sugery drinks and sweets;salt
      • cause fast and furious increase in blood suger
        • lead to Weight gain,diabetes,heart disease,other chronic disorders
    • salt~~high-sodium>>increase risk of heart attack and stroke
• It′s not a rigid roadmap but general,flexible guide[amounts vary depending different situations]
• Alcohol in moderation(not for everyone)
  • an alcoholic drink a day lowers the risk of heart disease
  • Moderation
    • Man~~~1-2drinks a day
    • before middle age----risks always more than benefits
    • Women~~~one drink per day(pregnancy avoid)
• Multivitamin with extra vitamin D(for most people)
  • >>>>nutritional backup
    • just meet the requirements of USP
• excellent sources of protein,fiber,vitamins and minerals