问题
填空题
有4道选择题，每道选择题有4个选择支，其中有且只有一个选择支是正确的．有位学生随意选了其中一道题，然后又随意选了一个选择支，那么他答对的概率为______．
答案
由题意可得，每道题的选法共有4种，只有一种选法是正确的，由于此学生随意选了其中一道题，然后
又随意选了一个选择支，故他答对的概率为
，1 4
故答案为：
．1 4
搜题请搜索小程序“爱下问搜题”
有4道选择题，每道选择题有4个选择支，其中有且只有一个选择支是正确的．有位学生随意选了其中一道题，然后又随意选了一个选择支，那么他答对的概率为______．
由题意可得，每道题的选法共有4种，只有一种选法是正确的，由于此学生随意选了其中一道题，然后
又随意选了一个选择支，故他答对的概率为
，1 4
故答案为：
．1 4
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. Stress is what you feel when you are worried about something. 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. Some kinds of stress are good and others are bad. Good stress might happen when you’re called to answer questions in class or when you have to give a speech. This kind of stress can help you to get things better done. 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 stress lasts too long. You may not feel well if your parents are fighting, if a family member is sick, if you’re 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 stress is to have a balanced life. Make sure you keep your SELF in mind: Sleep, Exercise, Leisure(休闲), and Food. If you get enough sleep and eat properly, and if you exercise and leave time for fun, you’ll probably feel less stressed.
| Title: Face the Stress | ||
| Meaning of stress | Stress is a (68) when you are worried about something. | |
| Possible effect | You may feel uncomfortable in your (69) and body. | |
| Good stress | · It might happen when you have to (70) in public. · It will be more (71) for you to do the job successfully. · It makes you (72) better before doing the job.
|
| Different kinds | Bad stress | · It might happen if your stress (73) too long. · You may not feel well with the (74) of a family member, problems at school or something else that worries you every day. · It might stop you from getting your work well done.
|
| How to keep stress (75) | Have a balanced life. · Have enough sleep and have (76) food. · Take exercise and have time to (77) yourself.
| |