What Makes Me the Weight I Am?[卫生类职称英语教材]
There’s no easy answer to this question.Your genetic makeup，the physical traits that get passed down1 to you from your parents，plays a big part in determining your size and weight. 1 But if your parents are smaller than average，you may want to rethink that professional basketball career!2
The same goes for your body type.3Have you ever heard someone say a person is“big boned4”?It’s a way of saying the person has a large frame,or skeleton.Big bones usually weigh
more than small bones. 2
Like your height or body type，your genes have a lot to say6 about what your weight will be.But that’s only part of the story.Being overweight can run in someone’s family, but it may not be because of their genes.7 3 And even though some kids gain weight more easily than others，when they eat fight and exercise，most kids can be a healthy and happy weight that’s right for them.It’s true—the way you live can change the way you look.
How much you weigh is a balance between the calories you eat and the calories you use.
4 If you spend your free time watching TV，your body won’t use as many calories as it would if you played basketball，skated，or went for a walk.If you are in balance，your weight will stay fight for you as you grow.But if you eat more and exercise less，you may become overweight 5
词汇：
genetic adj.遗传(性)的；基因的 makeup n.组成；构造
trait n.特征，特点，特性 rethink vi.再想，重新思考
professional adj.职业的，专业的 skeleton n.骨骼
overweight adj.超重的；过重的 calorie n.千卡
skate vi.滑冰
注释：
1.get passed down：被遗传下来
2.But if your parents are smaller than average，you may want to rethink that professional basketball career!：但是如果你的父母比一般人的个头矮小的话，你也许会重新考虑是否还要当职业篮球运动员。
3.The same goes for your body type.：你的体型也是如此。
4.“big boned”：“骨骼大的，宽肩膀的”
5.That’s why it’s possible for two kids with the same height，but different weights，to both be the right weight.：正因为这样，两个身高相同、体重不同的孩子却有可能体重均正常。
6.have a lot to say：起很大作用
7.Being overweight can run in someone’s family，but it may not be because of their genes.：身
体超重有可能在家族中代代相传，但这也许并非基因所致。
8.lose weight：体重减轻，变瘦
练习：
A. That’s why it’s possible for two kids with the same height，but different weights，to both be the right weight.5
B. If you eat more calories than your body needs to use，you will gain too much weight.
C. Poor eating and exercise habits also run in families and this may be the reason the members of a family are overweight.
D. However, many overweight people have difficulty reaching their healthy body weight.
E. On the other hand， if you eat less and exercise more，you may
