It’s the lunchtime break at Shanghai Xianxia Middle School. No mobile phones can be heard

It’s the lunchtime break at Shanghai Xianxia Middle School. No mobile phones can be heard ringing anywhere. The common sight of crowds of children chatting on their phones or sending short messages has disappeared(消失).
A grade-2 student said: “I couldn’t concentrate(集中精力) during classes if the phone was with me. I couldn’t help checking if there were messages or missed phone calls. I even played games on the phone sometimes.”
The school leaders say they feel the ban(禁令) is necessary to keep order in class. They even gave out an open letter to remind parents not to let their children bring mobile phones to school. More than 96 percent of parents say they welcome the school decision. The school is also being flexible（灵活的）in implementing the ban. Those students who live far from school are allowed to bring mobile phones to call their parents. But they still have to turn them off in classrooms.
Medical experts(专家) have also welcomed the school decision. They say too much dependence on mobile phones can cause many psychological problems in school students.
【小题1】The passage mainly tells us about .A．whether the mobile phone should be used at school by studentsB．the harm the mobile phone may cause to middle school studentsC．different opinions between school leaders and medical expertsD．a ban on the use of mobile phones by students in a middle school【小题2】In paragraph 3, the underlined word “implementing” means in Chinese.A．调整B．公布C．执行D．张贴D

(答案→)D 解析：这篇短文主要告诉我们在中学的学校禁止学生使用手机的命令。当然学校在执行禁令时可以灵活的掌握的。【小题1】主旨大意题。结合全文可知这篇文章主要告诉我们在中学禁止学生使用手机的禁令。故选D。【小题2】词义猜测题。联系下文可知学校执行禁令时也是灵活的，故选C，执行。

回答的不错