Because the flu virus changes every few years, there are so many kinds of flu, such as H1N1 and H5N1.The antibodies for one kind of flu can’t help us fight against all kinds of flu.So we need to get the vaccine every year. However, good health habits may also help stop you from ...
一、A. The boy has a runny nose. B. The girl has a toothache. C. I have a headache. D. She has a high fever. E. The boy has a stomachache. F. The young woman has a sore throat. 二、 1. He has the flu. 2. I have a cough. 3. Please open your mouth. 4. The boy ...