Recently children have been told to buy traditional alarm clocks instead of mobile phones to wake them up in the morning. Schools will advise pupils to turn off mobile phones or iPads in the evening to have enough sleep.
Researchers from a charity say that using internet-connected devices(装置)in the evening can prevent children getting more rest. Moreover, they suggest that school children should invest in a real alarm clock to make sure that they get a good night's sleep and arrive at school on time.
   ①   . The result is that 40% pupils in secondary schools can now hardly get on well without these devices. About two-thirds of pupils have a habit of taking mobile phones to bed at night.
   ②   . The study also shows that girls are more likely to be attracted by mobile phones than boys, and often use the Internet to talk to friends by social networking websites, such as Facebook and Twitter. One girl aged 12 said, "I have been told that I am addicted(上瘾的)to the Internet, and prefer being online to being with other people."
   ③   . A girl of 13 told researchers, "I can't imagine if someone takes my iPad away. I walk around the house with it even though its' not turned on. I just like being with it." Another girl added, "Sometimes I can't sleep without using the mobile phone at night."
   ④   . The charity, which was set up to promote(推动)iPads in the classroom, has now given five suggestions to protect children from being affected by electronic(电子的)devices.
41. To get a good night's sleep, school pupils are asked to buy ________.
A. iPads B. alarm clocks C. mobile phones D. electronic devices
42. The underlined words "invest in" in Paragraph(段落)2 mean ________.
A. hand out B. hand in C. spend time on D. spend money on
43. It is better to put "A study of about 3000 pupils shows that almost half feel to be controlled by electronic devices" in ________.
A. ① B. ② C. ③ D. ④
44. From the passage, we can learn that ________.
A. most pupils turn off their mobile phones in the evening
B. using mobile phones can make children get more rest
C. one-third of pupils get used to sleeping with mobile phones
D girls are more interested in using mobile phones than boys
45. What will be talked about in the following paragraph?
A. Examples of boys. B. More information about the charity.
C. The tips given to children. D. Instructions about electronic devices
这是一篇说明文，文章主要讲述慈善机构的机构发现电子设备让孩子们睡眠更少，建议孩子们为了足够的睡觉关掉手机或平板，买传统的闹钟来代替手机在早上叫醒他们。
41.B【解析】细节理解题。根据第一段“Recently children have been told to buy traditional alarm clocks instead of mobile phones to wake them up in the morning”可知学校的学生被要求买传统的闹钟。故选B。
42.D【解析】词义猜测题。根据“buy traditional alarm clocks”可知invest in表示花钱，相当于spend money on。故选D。
43.A【解析】推理判断题。“A study of about 3000 pupils shows that almost half feel to be controlled by electronic devices”大约3000的小学生的研究显示几乎一半感觉被电子设备控制。根据第三段“The result is that 40% pupils in secondary schools can now hardly get on well without these devices. About two-thirds of pupils have a habit of taking mobile phones to bed at night”40%的小学生没有这些设备几乎不能友好相处，大约三分之二的小学生晚上有用手机的习惯。可知此段讲述研究显示出的小学生使用手机的问题。故选A。
44.D【解析】细节理解题。根据“girls are more likely to be attracted by mobile phones than boys”可知女孩比男孩更有可能被手机吸引，故选D。
45.C【解析】推理判断题。根据最后一段“has now given five suggestions to protect children from being affected by electronic devices”机构给了五条建议保护孩子们免受电子设备的影响。可推断下一段将讲述这些建议。故选C。