Section C-|||-Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished-|||-statements. For each of them there are four choices marked A),B),C)and D).You should decide on-|||-the best choice and mark the corresponding letter on Answer Sheet 2 with a single line through the centre.-|||-Passage One-|||-Questions 46 to 50 are based on the following passage.-|||-You may know the feeling.It`s the late afternoon,and you still haven`t left the house. You`ve spent the last-|||-several hours on your phone, scrolling through your Facebook news feed, refreshing Twitter and watching YouTube-|||-videos.A smartphone might feel like it`s keeping you connected,but it can also be a way of sccluding yourself.-|||-Data from a recent study conducted by researchers at Northwestem Limerstly`s F School of Medicine-|||-found that the scenario described above-high volume of phone use and a static(静止的)geographic location-could-|||-be linked to depression. The study,published in The Journal of Medical Internet Research,also found that depressed-|||-people,on average,spend more time on the phone than non-depressed people.-|||-"People are likely,when on their phones,to avoid thinking about things that are troubling,painful feelings or-|||-difficult relationships,"David Mohr, one of the study`s senior authors and a professor of behavioral psychology at-|||-Northwestern,in a statement."It`s an avoidance behavior we see in depression."Mohr also pointed out that depressed-|||-people tend to withdraw emotionally and avoid going out-behaviors that are arguably facilitated by the constant-|||-entertainment stram avall on smartphones.-|||-The study`s participants consisted of a mix of people with and without prior depression. They completed a-|||-questionnaire describing symptoms before agreeing to have their phone use monitored for two weeks.Using GPS,-|||-the researchers tracked their location and the amount of time they spent on the phone.They were then able to identify-|||-which participants were depressed using the aggregated phone data,with 87 percent accuracy.-|||-Sohrob Saeb,a research fellow at Northwestern,said in the release that phones could be more reliable for-|||-diagnosing depression tha traditional methods.In standard industry practic patients are often asked to describe-|||-their symptoms by indicating how sad they are on a scale of 1 to 10.According to Saeb,the release reported, these-|||-responses can be rote and unreliable.In contrast,the study found,a smartphone can unobtrusin (不引人注目地)-|||-and accurately measure a patient`s daily activity,providing data that could trigger a health care provider to recognize-|||-the need for an intervention.-|||-46.What is the author`s opinion about using a smartphone?-|||-A)It is only a tool to contact people.-|||-B)It makes people feel loncly.-|||-C)It does great harm to health.-|||-D)It keeps people apart from others.-|||-47.What can be learned from the study conducted by researchers at Northwestern University?-|||-A)Too much time spent on phones leads to depression.-|||-B)Depressed people tend to spend more time on phones than others.-|||-C)Spending more time on phones can help cure depression-|||-D)Non-depressed people spend little time on their phones.-|||-48.According to Mohr,why do depressed people focus on phones?-|||-A)They tend to temporarily forget about unhappiness.-|||-B)They feel entertained and amused by phones.-|||-C)They do not have many friends to hang out with.-|||-D)They find confidence and happincss from the phones.-|||-49.What do we know about traditional methods for diagnosing depression?-|||-A)Patients`location is monitored by GPS.-|||-B)Patients describe their symptoms in words.-|||-C)Patients complete a questionnaire to describe symptoms.-|||-D)Patients indicate their sadness on a scale of 1 to 10.-|||-50.Patients`daily activities can be measured by smartphones so that __ ---|||-A)they can adjust their living habits if necessary-|||-B)their family and friends can know them better-|||-C) they can get timely health care if needed-|||-D)they will do their best under the monitoring