The infectious disease influences our daily life and health. What’smore， it can make people die. What can we do to protect ourselves from the flu?
The Chinese people waste too much food every year， so our government has called on the people to save food and eat healthily. We middle school students should make a little contribution to it.To save food， we shouldn’t waste our food. We should eat up all the food. We shouldn’t order the food more than we can eat while dining out， because many people in the world don’t have enough to eat. To eat healthily， we shouldn’t eat junk food but healthy food. It’s good for our health to eat a balanced diet. We’d better not eat in small restaurants. The food and the oil they use are not clean or healthy enough. We’d better eat at school or at home if we have time.
15SOS is a code that was used in an old form of communication called Morse Code. It is a call or signal for help.15.1code名词，密码;
