阅读理解。
You prlbably know the food pyramid (金字塔) well enough. It is a food pyramid with horiaontal stripes
(水平线). Carbohydrates (碳水化合物), such as bread,rice and potatoes,are on the dase of the pyr-amid.They
are most of our everyday food.The fats and oils (脂油) are at the top of the pyramid. We should eas the least
of them.
Well, the food pyramid. with vertical stripes (垂直线). Instesd of the horizontal stripes,the vertical stripes
mean the five food groups and fats and pyrmid.This is because not all foods in a food group give us the same
health benefits (好处). A fresh apple, for example,would be on the base of the pyramid,while an apple pie
would be at the top Tis shows that we can eat more fresh (阶梯) going up the side This shows us how
important exercise is. It also shows us that we will be healthier and healthier if we take exercise every day.
Sp wju did some American experts change the pyramid?They did this to do a better job of tell-ing people
how to be healthy. The new pyramid tells us to have dalanced (平衡的) food from each food group eery daly.
and it shouw us that we need Iess of some us kinds of food than othen, For ex-ample, you need less meat or
fish than rice or fruit. It also shows us that not all foods in a groupgive us the same health benfits,and that
exercise is quite important in oru everyday life.
1. The vertical stripes in the new pyramid mean ________.
A. bread, rice, potatses,fruit and meat
B. some kinds of food we aboule eat
C. the five food groups and fats and oils
D. carbohydrates, fats and oils
2. The word "fresh" here in Chinese means _________.
A. 清新的
B. 新鲜的
C. 新做的
D. 鲜做的
3. The steps show us _________.
A. how to eat tats and oils
B. exerciac in very difficult
C. how to have dalanoed food
D. exercise is very important
4. The stripes in the new pyramid decome thimmer at the top because _________.
A. you shoule cat less as grow older
B. all foods in a food group give us different at the top hecause .
C. some foods in each food group are not as healthy as others
D. the older you are the more important the food pyramid im
5. The American experts changed the pyramid because _________.
A. they wanted to sell people how tohe healthy more clearly
B. the old food pyramid doss not tell people to take exercise every day
C. the new food pyramid looks much better than the old
D. the old food pyramid is not good for our health at all
缺失，余留牙Ⅱ度松动，有广泛的龋齿，牙槽骨吸收至根中3/5。下列说法正确的是（）。