世界著名的盲聋作家,社 会活动家海伦、凯勒，从小就生活在一个没有声音，没有光明的世界里。在老师的帮助下，坚强的海伦学会了说话，诗书，通晓好几个国家的语言成为著名作家，另外她还积极投身于社会公益事业，为社会进步作出了贡献，这说明（   ）

①自立者才能走向自强之路                                          ②自强者才能积极进取，不断超越自己

③自强者才能努力完善自己，积极服务社会              ④只有出生于苦难当中，人才能学会自强

为了照顾朋友的情面，就可以不得不做些违心的事。这种看法是（　）

    In many high schools, there are strict rules about using mobile phones. If your phone rings in class, for example, the teacher will be very angry.

    Every mobile phone has a ringtone (铃声). It tells you that someone is calling you. Now, there is a ringtone called “mosquitotone (蚊子铃声)”.

    Mosquitotone has a special sound. Only children and teenagers can hear it. As we get older, we are unable to hear some sounds with high frequencies (频率). As a result, a child or teenager can hear the mosquitotone ringtone, but someone of 20 or older can't.

    But sometimes, people over 20 can hear the ringtone. One British student's phone uses mosquitotone. In class, the student's phone rang. The 22-year-old teacher looked at the student and became unhappy. “I heard that. You know the rule：no mobile phone in class. ”

    Not all the students are interested in mosquitotone. Jerry Jones, a high school student of 17, says, “Using mosquitotone too often is bad for our hearing. I may use it for pleasure, but not in class. It's unfair(不公平的) to the teachers！”

    What do parents think of mosquitotone？“I think it is perfect for places like movie theaters,” says Connie Neeson, 44. “Think about it. You're watching a film and someone's mobile phone rings. Mosquitotone is good because many people don't hear it. However, it also has a bad influence（影响） on their study if students use it in class. ”