问题
单项选择题
使用一次性付费业务时，每个用户仅仅有一个临时的账户，在账户中有一定金额。用户通话时，系统实时地从账户上减去用户的话费。如果用户在通话过程中，剩余的金额仅仅够用户通话（）时，就向用户发提示音，提示用户。
A.1分钟
B.10秒
C.30秒
D.3分钟
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
使用一次性付费业务时，每个用户仅仅有一个临时的账户，在账户中有一定金额。用户通话时，系统实时地从账户上减去用户的话费。如果用户在通话过程中，剩余的金额仅仅够用户通话（）时，就向用户发提示音，提示用户。
A.1分钟
B.10秒
C.30秒
D.3分钟
参考答案：C
| 任务型阅读：中学生上网一直是备受关注的热点话题。某班就这一话题组织了一次主题班会。以下是几位同学的观点，请仔细阅读下面内容，完成信息记录卡。 | ||||||||
| Li Hua: Surfing the Internet is very exciting. We clan do lots of' things, such as playing games, listening to music, chatting with our friends and so on. I really enjoy it. Wang Gang: I like surfing the Internet, too. Be-cause I can learn a lot from it. I can get the latest news all over the world. I also can find the information I need so that l can spend less time on my homework. Zhang Jie :It's hard to say. I agree that the Internet is helpful to our study, but it's not right to spend too much time on the games. And some information on the In-ternet is bad for our mind and our eyes. In a word, we should use the Internet in a right way.
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