单项选择题

As I write these words,a triumphant horn is erupting in my ear over the thythmic bowing of violins.In fact,as you read,I would l you to listen along-just search"Battlefield One."1 2 you'll focus jusL a bii better with it playing in the background.3,as a video game soundtrack it's designed to have exacdy that 4.This is,by far,the best Life Pro Tip I've ever gotten or given:Listen to music from video games when you need to 5.It's a whole genre designed to simultaneously 6 your senses and blend into the background of your brain,7 that's the point.of the soundtrack.It has to 8 you,the player,in a task without distracting from iL.In fact,the best music would actually 9 the listener to che task.Plenty of studies 10 that having some sound around you can help you focus,11 because it gives your subconscious something to 12.It doesn't have to focus on Lhat coughing coworker or the occasional sound of doors closing,13 you aren't distracted by intermittent interruptions.Music seems to focus us the best,14 not just any music.The latest#1 single is more 15 to make you sing along and tap your toes than.16 into your work day.Silence,on the other hand,seems to make office workers 17 and less proficient than their music-listening compatriots.18 some surgeons use music to get in the groove,and research 19 those who do this perform operations more efficiently and with higher 20.
14选?

A.hence
B.furthermore
C.and
D.but
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单项选择题
Interact use appears to cause a drop in psychological health, according to research at Carnegie Mellon University.Even people who spent just a few hours a week on the Internet experienced more bad feelings and loneliness than those who was online less frequently, the two-year study showed. Researchers are puzzling over the results, which were completely contrary to their expectations. They expected that the Internet would prove socially healthier than television, since the Net allows users to choose their information and to communicate with others.The fact that Internet use reduces time available for family and friends may account for the drop in psychological health, researchers hypothesized(推测).Faceless, bodiless “virtual”(虚的)communication may be less psychologically satisfying than actual conversation, and the relationships formed through it may be shallower. Another possibility is that exposure to the wider world through the Net makes users less satisfied with their lives.“But it's important to remember this is not about the technology, it's about how it is used,” says psychologist Christine Riley of Intel, one of the study's sponsors(发起人). “It really points to the need for considering social factors in terms of how you design applications and services for technology.”Which of the following would be the most appropriate title for the passage?( )
A.HowtoUsetheInternet
B.DisadvantagesoftheInternet
C.SocialFactorsandtheInternet
D.InternetMayCauseBadFeelings