根据短文内容,判断下列句子的对错.
Against SARS
SARS（非典） is a very bad disease（疾病）. It is a kind of disease in the lungs（肺）. People may die when they have SARS. It’s not very hard to do something against（预防） SARS. First, often wash your hands. Second, often open the windows of your house to air the rooms. Third, keep the room clean and do some exercises. Fourth, don’t go to the places where there are a lot of people. There are also many other ways to do. But please remember those. You will be healthy.
() 1. SARS is a disease in people’s arms.
() 2. People may die when they have SARS.
() 3. People can’t be against SARS.
() 4. You should do some exercises and keep the room clean.
() 5.We can go to the places where there are a lot of people.