Being seriously overweight can lead to health problems later in life. As a result, Arkansas first started the BMI program in 2004-public schools were required to provide parents with a yearly report of their children’s body-mass index (BMI)，a number to show whether their weight is appropriate (合适的）.

词汇突破：

1. seriously 严重地，非常；

2. overweight 超重的，过重的；

3. lead to 引起，导致；

4. as a result 结果；

5. program 计划，方案；

6. public school 公立学校；对应的私立学校private school；

7. require 要求；

8. provide 提供；

9. body-mass index 体重指数；

10. whether 是否；读音和weather一样，意思不一样；

拆分句子:

As a result, Arkansas first started the BMI program in 2004-public schools were required to provide parents with a yearly report of their children’s body-mass index (BMI)，a number to show whether their weight is appropriate (合适的）.

本句话拆分后：

1. As a result；

2. Arkansas first started the BMI program in 2004；

3. public schools were required to provide parents with a yearly report of their children’s body-mass index (BMI)；

4. a number to show whether their weight is appropriate (合适的）；是BMI的同位语，解释它的含义；