根据材料请回答 36～40
Diabetes
Most of the food we eat is turned into glucose(葡萄糖)for our bodies to use for ener-gy.The pancreas(胰腺), an organ near the stomach, makes a hormone called insulin to help glucose get into your body cells.When you have diabetes(糖尿病), your body either doesn't make enough insulin or can't use its own insulin well.This problem Causes glucose to build up in your blood.
You may recall having some of these signs before you found out you had diabetes.
* Being very thirsty.
* Urinating a lot -- often at night.
* Having unclear vision from time to time.
* Feeling very tired much of the time.
* Losing weight without trying.
* Having very dry skin.
* Having sores(疼痛)that are slow to heal.
* Getting more infections than usual.
* Vomiting(呕吐).
Two main types of diabetes are Type 1 and Type 2.Another type of diabetes appears during pregnancy in some women.It's called gestational(妊娠)diabetes.
One out of ten people with diabetes has Type 1 diabetes.These people usually find out they have diabetes when they are children or young adults.The pancreas of a person with Type 1 makes little or no insulin.People with Type 1 diabetes must inject insulin ev-ery day to live.
Most people with diabetes have Type 2 diabetes.The pancreas of people with such di- abetes keeps making insulin for some time, but the body can't use it well.Most people with Type 2 find out about their diabetes after age 30 or 40.
Some risk factors which make people more likely to get Type 2 diabetes are:
* A family history of diabetes.
* Lack of exercise.
* Weighing too much.
Diabetes can hurt your eyes, your kidneys, and your nerves.It can lead to problems with the blood circulation in your.body.Even your teeth and gums can be harmed.And di- abetes in pregnancy can cause special problems.
第 36 题 This writing is meant to tell people_______ .

A. how to avoid getting diabetes
B. what to pay attention to when they have diabetes
C. what diabetes is
D. about the development in curing diabetes