Some teachers say that texting and social networking can make students lazy when it comes to writing properly.The results of a recent study showed that young adults who often use text language are less likely to switch back to proper grammar when needed.But another view is that text messaging has no effect at all,as many people consider it to be a language of its own.

　　Whether it’s harmful or not,it seems that text language is seeping(渗透) into the mainstream one way or another.In a study published last year,64 percent of teens admitted using informal “text language” in their regular classrooms,in writing assignments.This could mean that poor grammar is becoming the standard for written communication through incredible laziness.

　　But it isn’t just a matter of language—students who frequently text during class also have difficulty concentrating.In another survey,students were asked to complete a questionnaire on how many text messages they sent and received during class.On average,students sent more than two text messages during lectures lasting 50 to 75 minutes.The research showed that students who frequently text during class are less likely to focus on lectures,therefore affecting their studies.

　　1.How did the writer introduce the topic of the passage?(within 5 words)

　　2.What are the two main features of most text messages?(within 10 words)

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