How much time do you spend in front of a screen every day？ If your answer is about one hour，then maybe you are one of the （1） teenagers in the world．
Scientists did a （2） ． They asked students aged 13 to 18 how long it （3） them to have fun on phones and computers． They also asked about （4） feelings of happiness． They found that those who spend more time on their smart phones are unhappier． "Spend no more than two hours a day on digital media（电子产品）， （5） _ try to spend more time with friends and on exercise． These two activities bring greater happiness．" Jean Twenge， the scientist who led the study ，said．
（1）A． happy |
B． happier |
C．happiest |
（2）A． survey |
B． discovery |
C．test |
（3）A． takes |
B． spends |
C．costs |
（4）A． your |
B． our |
C．their |
（5）A． but |
B． and |
C．or |
A big company wanted to find someone to work for them．Lots of young college students came to ask for the（31） ．And this time，the company didn't plan to choose the right persons as usual．
Here came the day when they took the final interview．A big box full of papers was placed on the way to the interview room，and a few（32） were lying around the box．
The（33） student came．He hurried along the way to take the interview．"（34） put this box in the middle of the road？"the student said to himself，but he did not try to move the box away．
The second student came along and did the（35） thing．Then another came，and another．All of them complained （抱怨） about the box，（36） none of them tried to move it．
Half an hour later，a thin young man with glasses came．He saw the box and the papers around it．Without thinking twice，he stopped and began to pick up the papers and put（37） into the box．Then he moved the box to the side．（38） his great surprise，he（39） an invitation under the box．It said，"Congratulations! You are the（40） person we are looking for! Would you like to join us？"
Sometimes，you see，helping others is helping yourself．
31．A．book |
B．job |
C．money |
32．A．papers |
B．books |
C．magazines |
33．A．one |
B．once |
C．first |
34．A．Who |
B．When |
C．Where |
35．A．different |
B．common． |
C．same |
36．A．but |
B．and |
C．however |
37．A．it |
B．them |
C．they |
38．A．To |
B．With |
C．On |
39．A．looked |
B．invented |
C．found |
40．A．strange |
B．right |
C．handsome． |
I arrived in the UK last weekend to learn English． So（56） ， I have already made a few friends and had some English food there． But after（57） （have） three days of hamburgers， sandwiches and（58） （potato）， I thought none could be（59） delicious than Chinese food， especially my favorite﹣huo guo， When I knew there was going to（60） a free meal of hotpot to welcome the new students， I was so excited（61） I went to the canteen quickly．
To（62） surprise， when I stepped into the room， I didn't see any sign of huo guo． After I talked with an English girl， I got to know that Chinese huo guo is（63） （complete） different from hotpot． Chinese huo guo is（64） （write） in two words﹣hot pot；and hotpot， one word， is a（65） （tradition） English dish．
As Chinese students， we must know something about a great man （51）c Zheng He． He was a Ming Dynasty explorer． He led seven ocean journeys from 1405to 1433． At that time， the compass （52）p an important role in his sailing． He even succeeded in sailing to the east coast of Africa． His last ocean journey was over half a （53） （世纪）earlier than Columbus' first journey to America． We Chinese are （54） （骄傲的）of him． It's a pity that he died of illness on his way home from Africa in 1433． （55）H ， his journeys were so meaningful in China's history．
Have you ever heard of e﹣waste（电子垃圾）？How do you deal with your Mp4players， mobile phones and your computers when they're broken or you want a new one？
Most people just throw them away． With the（21） of electronic industry， e﹣waste pollution has become a serious problem． According to the UN， in 2014， people around the world produced 41.8million tons of e﹣waste and only（22） less than 20% of it． The USA was（23） waster in the world， producing 7.1million tons． China came second，（24） 6million tons．
It's important to pay attention to e﹣waste． It can be（25） valuable or harmful， depending on what we do with it． E﹣waste is a valuable urban mine（城市矿藏）． The value of the metals， like gold and silver is（26） ． And the metals can be reused， but if people throw them away， the toxic（有毒的） chemicals can（27） the earth or air， they will affect the environment and people's health．
Now， Apple recycles people's used products in China when they're buying new（28） ． The company will test and repair them and then sell them at lower prices．（29） e﹣waste， we can buy longer lasting electronic products． If you don't want your electronics， find a new home for them． You can also take them to see（30） companies can offer recycling programs．
21． A． developing |
B． developed |
C． development |
22． A． recycled |
B． rebuilt |
C． researched |
23． A． big |
B． bigger |
C． the biggest |
24． A． during |
B． with |
C． between |
25． A． both |
B． either |
C． neither |
26． A． amazing |
B． disappointing |
C． boring |
27． A． get up |
B． get into |
C． get on |
28． A． them |
B． those |
C． ones |
29． A． To increase |
B． To reduce |
C． To keep |
30． A． that |
B． where |
C． whether |
Life will be peaceful if you always do kind things．I teach my daughters to d（76） a habit of helping others．
We live in a rural（乡村） area．Most of what we see is beautiful nature．One of the exceptions （例外） to the beauty is the rubbish that some people throw out of their car windows．And there are no necessary public s（77） ．Such as rubbish collection．
A helping behavior（行为） that I often p（78） with my daughters is picking up rubbish in our neighborhood．My daughters often have a m（79） to see who can collect the most rubbish．They will often say to me in an excited voice，"There's some rubbish，﹣Daddy，stop the car!"Without t（80） more，we will often get out of the our car and pick it up．Though it may seem s（81） ，we do it．In fact，we enjoy it．We pick it up rubbish in parks，on sidewalks，almost a（82） ．
One day I saw a man I had never met before picking up rubbish on the road．I stopped．He r（83） his head and said to me with a smile，"I saw you doing this with your family．It's a good idea to protect our natural world．"
There are many other ways to p（84） kindness for others．You may share a dinner with a beggar（乞丐），visit lonely old people in the nursing home，or help the blind cross the street．You can think of something that can be finished e（85） but helpful．It is fun，self﹣satisfying，and what's more，it can set a good example．Helping others is helping yourself．
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