下列哪个领域经常面临微型计算机迅速发展所带来的风险（）。1．备份和恢复2．应用程序开发成本3．记录的批量更新4．访问的安

参考答案：针对性 预见性 灵活性 多重性

答案：B

解析：

参考答案：The further development of economy in China has brought the more entertainment and leisure to people’s life.A case in point is the long holiday such as the National Day, in which people can spend one week or so enjoying themselves in different ways, especially going shopping and traveling.It has been agreed that the long holiday may bring much more benefit to both the customer and the businessmen.
On the other hand, however, the long holiday also brings much expectable problems to the society.First, too many visitors in the long holidays have caused the strain in traffic.Second, the visitors like to go to the well-known interesting places, which may lead to the serious damage to the nature and the scene.
In my view, people need such long holidays, and what really matters is how to guide people in their entertainment.For example, it is advisable that people try to avoid going shopping or traveling in the rush days.Anyway, the long holiday is a good idea of satisfying both the people and the merchants.

答案：C

参考答案：C