4．
What is the hottest English word nowadays？It's"selfie"．Selfie is a photo that one takes of oneself，according to the Oxford online dictionary．Young people usually take selfies with a smartphone （智能手机） and share them online．The word was first used in 2002．Now almost everybody knows it．
"Almost every day，I take a photo of myself at school，and save it in my Qzone （QQ空间），"said Lin Na，13，from Fujian．These photos record her happy and sad moments．
Pop stars also like to take a lot of selfies，and they use them to tell their fans what's going on in their personal lives．
Young people are using selfies to make friends online．"The usual purpose of taking a selfie is to share online．They express a human need to connect with others，"wrote Freedland．
Lin Na agrees with that．"During summer vacation，my classmates and I shared many selfies online．We didn't pay much attention to hair or clothes．Through these photos，we got to know each other's holidays and feelings，"said Lin Na．
However，in the new digital age，we need to be careful when using smartphones．If you use them too much，you may turn into a dangerous addiction （上瘾）．So it's always best to use your smartphones properly．
根据短文内容，选择最佳答案．
51．According to the passage，selfie isB．
A．a kind of smartphone
B．a photo taken by oneself
C．a person with a smartphone
52．We can know from the passage that pop starsC．
A．like to save their photos in their Qzones
B．enjoy making friends online
C．love to take selfies as well
53．During summer vocation，Lin Na and her classmates took selfiesB．
A．to show hair and clothes only
B．to share their holidays and feelings
C．to introduce different places of interest
54．The passage mainly talks aboutC．
A．how to take photos of yourselves
B．whether people like to share photos online
C．taking selfies is popular with young people
55．In the last paragraph，the writer wants to tell usA．
A．smartphones must be used properly
B．smartphones play an important part in our lives
C．smartphones are turning students into a dangerous addiction．
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