Smartphones are mobile phones with an advanced mobile operating system. Which one is not a smartphone? _____
举一反三
- ______ is an operating system for mobile devices based on the Linux kernel and Java.
- 3G mobile technologies preoffers more advanced services to mobile users.
- Mobile phones have become a (1)______________ for middle schools. Some middle schools in (2) ______________ ask students not to carry mobile phones during school hours. There are several reasons. First, mobile phones are (3)______________ . Second, using mobile phones is a distraction to the students. Third, mobile phone use also gives teachers so much trouble, because some students might use phone messages (4)______________ . So, some teachers say students should not have mobile phones at school, but if there was a good reason, they could (5)______________ their phones at the school office.
- Which statement is right A: Students shouldn’t have mobile phones at school except for some special reasons. B: It is important to ban students from using mobile phones at middle school. C: Some parents felt unhappy because they couldn’t use their phones at home. D: Parents should teach their children how to use mobile phones during school hours.
- Advanced Mobile Phone Service(AMPS)