问题 单项选择题

以下哪一项不能适应特洛伊木马的攻击?()

A、强制访问控制

B、自主访问控制

C、逻辑访问控制

D、访问控制表

答案

参考答案:B

阅读理解

Swimming,cycling, jogging, skiing, dancing, walking or any of dozens of other activities can help your heart.    1  . Whether it is a structured exercise program or just part of your daily routine, all exercise adds up to having a healthier heart. Here are some tips for exercise success.

●Choose activities that are fun and add variety. Develop several activities that you can enjoy.    2  

●Wear comfortable, properly fitted shoes and comfortable, loose-fitting clothing appropriate for the weather and the activity.

●Find a convenient time and place to do activities.    3  . If you miss an exercise opportunity, work activity into your day another way.

●Use music to keep yourself entertained.

   4  .Decide what kind of support you need. Do you want them to remind you to exercise? Exercise with you regularly or occasionally? Be understanding when you get up early to exercise? Spend time with the children while you exercise? Try not to ask you to change your exercise routine? Share your activity time with others. Ask your family members, friends or co-workers for help.

●Don’t overdo it, especially at first. You can slowly increase the time and intensity (强度) of your activities as you become more fit.    5  

●Keep a record of your activities. Reward yourself at times. Nothing will inspire you more than success!

A.Try to make it a habit, but be flexible.

B.They all cause you to feel warm and breathe heavily without being out of breath.

C.Be an active role model for your children.

D.That way, exercise will never seem boring.E. If you are overweight or have a high risk of heart disease, see your doctor for medical advice before exercising.

F. Surround yourself with supportive people.

G. Gradually, work up to exercising on most days of the week for 30-60 minutes.

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