GSM移动通信中采用的防范措施有哪几个方面？请选择（）
A、备案
B、鉴权
C、设备识别
D、加密
E、客户身份识别
参考答案：B, C, D, E
根据括号中所给的中文，完成句子。
1. Nancy is in a mixed school and she spends a lot of time ________ (操练) softball every day.
2. Betty is ________ (慷慨大方的). She is willing to share things with her friends.
3. Kitty and I felt ________ (难受, 生病) for most of the trip to the World Park.
4. The Chinese government always ________ (鼓励, 劝告) farmers to leave the giant panda reserves.
5. If Sandy has a computer, she will get enough ________ (信息) for her report on Zhalong Nature Reserve.
地震引起的场地震害类型？
