随着生活水平的不断提高，“小胖墩”不断出现，从营养角度分析，_爱下问搜题

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问题选择题

随着生活水平的不断提高，“小胖墩”不断出现，从营养角度分析，你认为造成“小胖墩”的主要原因是（　　）

A．营养良好

B．营养不良

C．学习压力大，缺少运动

D．食物中含激素太多

答案

营养过剩是指糖和脂肪摄入量长期大于消耗量，如果膳食中不注意合理搭配，饮食中含有较多的糖类和肉类食品，并且在日常生活、学习中很少做运动，则会造成营养过剩，这些物质在体内转化为脂肪储存在皮下，造成肥胖，使身体超重．因此造成“小胖墩”的主要原因是营养良好．因此选项A符合题意．

故选：A．

阅读理解

阅读左栏的五段文字，然后在右栏A-G中找出与他们匹配的信息，并在答题卡上将选项涂黑。（有两个多余项）

( )1. My sister likes candies very
much, but she never brushes her teeth
after eating them.
(     )2.I have asked my uncle to stop         smoking many times, but it did not work.
(     )3. Tony always goes to sleep
after meals.
(     )4. Most children like to eat at
KFC or McDonald’s.
(     )5. Nowadays, many students
like watching TV at home on weekends
for a long time.

    A.I think it’s a bad habit. Going for a walk after meals is good for
us to keep fit and healthy.
    B.Water is a very important thing that we need. Scientists say we
should drink at least 2.5 liters of water a day.
    C.It’s very important to protect our teeth. Eating too much candies
is not only bad for our teeth but also bad for health..
    D.We can see the colorful world by watching TV with our eyes.
But we should protect our eyes carefully. We should let them have a
rest
after watching for one hour.
   E.In summer, swimming is very good. But you should pay attention
that you shouldn’t go swimming after drinking or when you are very
hot.
   F.Many people died from smoking them. Smoking brings us serious
hurt, and we should get away from it.
  G.The food there tastes good,but I think it's junk food.We should take    care of our eating habits and eat more food with high vitamins and eat less meat.

单项选择题

安静时细胞膜内K+向膜外移动是通过（）。

A.单纯扩散

B.易化作用

C.主动转运

D.出胞作用

E.被动转运