---Next Monday is my birthday.---Is that so?()---Thank you.
A. I don’t believe so.
B. Oh,I’m so glad.
C. What presents do you need?
D. Many happy returns of the day!
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会计报表中的有关报表项目的金额的直接来源是()
A. 原始凭证
B. 记账凭证
C. 日记账
D. 分类账
Do you often feel tired lately?Have a doctor said he can’t find anything wrong with you?Perhaps he advises you to take a physical examination,but all the advanced(高级的)equipment shows that there is nothing wrong with you.Then,consider this:You might be in a state of sub-health.Sub-health,also called the third state or grey state,is explained as a borderline state between health and disease.Experts have found out that people who work in management positions as well as students around the exam-week are more likely to suffer sub-health.They may feel depressed,anxious or under stress.Sub-health symptoms(症状)are a lack of energy,depression,slow reactions and poor memory.Some other symptoms may include shortness of breath,sweating and aching in the waist and legs.According to some medical experts,the key to preventing and recovering from sub-health is to form good living habits,alternate(结合)work and rest,exercise regularly,and take part in open-air activities.As for meals,people are advised to eat less salt and sugar.They should also eat more fresh vegetables,fruit and fish because they are rich in nutrient elements that are important to the body.Experts also point out that it is not good to eat too much at one meal because it may cause unhealthy changes in the digestive(消化)system.They also say that a balanced diet is very helpful in avoiding sub-health.The last but not the least,the help and understanding of family and friends are especially important.Sometimes life can become very much difficult to cope with.Then more help may be needed. What is not mentioned to prevent sub-health in the passage?()
A. Living habits
B. Exercise
C. Medicine
D. Meal
下列属于典型邻近攻击的是()
A. 会话拦截
B. 拒绝服务
C. 系统干涉
D. 利用恶意代码
计算机病毒是一种()
A. 命令
B. 程序
C. 标记
D. 文档