Researcher Kep Kee Loh said：“Media multi­tasking is becoming more prevalent in our lives today and there is increasing concern about its impacts on our cognition and social­emotional well­being.” “He added that more research is needed to prove that multi­tasking shrinks the brain. This is because it is also possible that people with less grey matter in the ACC are more drawn to using lots of gadgets simultaneously.” Experts have also warned of the harmful impact technology can have on our memory and attention span. The University of California team commissioned a survey of more than 18,000 people aged between 18 and 99 and found 20 percent had problems with memory. Researchers were taken aback by the 14 percent of 18 to 39­year­olds who also worried about their memories.

　　Multi­tasking with gadgets may shorten attention span, making it harder to focus and form memories, the researchers said, adding that youngsters may be particularly affected by stress.

　　1．What's the main idea of this passage?

　　A．Multi­tasking shortens attention span.

　　B．Multi­tasking makes your brain smaller.

　　C．Multi­tasking has harmful effects on our memory.

　　D．Multi­tasking is becoming more and more popular.

　　2．What does the underlined word “simultaneously” (in Paragraph 3) mean?

　　A．frequently B．now and then

【2016届高考英语人教版一轮复习：课时作业19】相关文章：

★ 2017届高考英语二轮复习课时训练：17（含解析）

★ 2017高考四川省广安市英语阅读理解一轮系列训练：1（含解析）

★ 贵州省贵阳市2014高考英语（新人教版）一轮阅读训练（4）附答案

★ 【北京专用】2014届高考英语一轮复习方案课时作业：必修3 Unit 3 The Million Pound Bank Note

★ 贵州省贵阳市2014高考英语（新人教版）一轮阅读训练（8）附答案

★ 【浙江专用】2014届高考英语一轮复习课时作业(十九)必修4Unit 4《Body language》

★ 五大2015-2016高考英语第一轮复习的技巧

★ 【浙江专用】2014届高考英语一轮复习课时作业(三十八)选修8Unit 3《Inventors and inventions》

★ 贵州省贵阳市2014高考英语（新人教版）一轮阅读训练（5）附答案

★ 2016高考英语听力提升素材