七选五
Have you had a headache during a test? Have you ever been so worried about something that you have a headache or even can't sleep at night? If so, then you know what stress is.____ This worry in your mind can make your body feel bad. You may feel angry, sad, scared, or afraid --- all of which can give you a stomachache or a headache.
However, there are different kinds of stress.____ Good stress might happen when you are called to answer questions in class or when you have to give a speech.____ For example, you may do a better job on your test if the stress pushes you to prepare better before the test.
On the other hand, bad stress can happen if the stress lasts too long. You may not feel well if your parents are fighting, if a family member is sick, if you are having problems at school, or if anything else makes you unhappy every day. That kind of stress isn't going to help you. And it can actually make you sick.
The best way to fight the stress is to have a balanced life.____ If you get enough sleep and eat properly, and if you exercise and leave time for fun, you'll probably feel less stressed.
A. No one can work well under the stress. B. Some kinds of stress are good and others are bad. C. This kind of stress can help you to get things better done. D. Stress is what you feel when you are worried about something. E. Make sure you keep yourself in mind: sleep, exercise and food. |
；②直角三角形的最大边长为 
，最短边长为1，则另一边长为 
；③在△ABC中，若∠A：∠B：∠C=1：5：6，则△ABC为直角三角形；④等腰三角形面积为12，底边上的高为4，则腰长为5，其中正确结论的序号是（ ）