The conclusion drawn by researchers is that
A.the skills of playing video games can be perfected by practice
B.playing video games make people smarter
C.those who play action video games are more efficient in collecting sensory information around them
D.videO．garners’performance in fulfilling specific tasks is better than non-gamers

根据以下资料，回答下列各题： In 1910．Henry Van Dyke wrote a book called The Spimt of America，which opened with this sentenee：“The Spirit of America is best known in Europe by one of its qualities—energy．”This has always been true．Americans have always been known for thelr mamc dvnamism．Some condemned this ambition as a scrambling after money.Others saw it in loftier terms．But energy has always been the country’s saving feature. So Americans should be especially alert to signs that the country is becoming less vital and assiduous．One of those signs comes to us from the labor market. According to figures from the Organization for Economic Cooperation and Development，the United States has a smailer share of prime age men in the work force than any other G-7 nation. Part of the problem has to do with human capital．More American men lack the emotional and professional skills they would need to contribute．According to data from the Bureau of Labor Statistics，35 percent of those without a high school diploma are out of the labor force．compared with less than lo percent of those with a college degree．Part of the Droblem has to do with structural changes in the economy．Sectors like government，health care and high．tech have been growing，generating jobs for collegegrads. Sectors like manufacturing，agriculture and energy have been getting more productive，but they have not been generating more jobs．Instead，companies are using machines or foreign workers. The resuIt is this：There are probably more idle men now than at any time slnce the Great Depression. and this time the problem is mostly structural，not cyclical．This is a big Droblem．It can’t be addressed through the sort of short—term Keynesian stimulus some on the left are still fantasizing about．It can’t be solved by simply reducing the size of government，as some on the right imagine． It will．probably require a broad menu of policies attacking the problem all at once： expanding community colleges and online learning；changing the corporate tax code and labor market rules to stimulate investment；adopting German-style. labor market practices like apprenticeship programs，wage subsidies and programs that extend benefits to the unemployed for six months as they start small businesses． Reinvigorating the missing fifth--bringing them back into the labor market and using their capabilities-will certainly require money．If this were a smart country．we’d be having a debate about how to shift money from programs that provide comfort and toward programs that spark reinvigoration． But，of course，that’S not what is happening．Discretionary spending，which might be used to instigate dynamism，is declining．Health care spending，which mostly provides comfort to those beyond working years，is expanding．Attempts to take money from health care to open it up for other uses are being crushed．We’re locking in the nation’S wealth into the Medicare program and closing off any possibility that we might do something significant to reinvigorate the missing fifth．Next time you see a politician demagoguing Medicare，ask this：Should we be using our resources in the manner of a nation in decline or one still committed to stoking the energy of its people and continuing its rise？ The loss of American dynamism concerned by the author is mainly manifested in the fact that_______．
A.American young are more indolent than their counterparts in other countries
B.America suffered from a higher rate of unemployment than other countries
C.More American young are out of work than their counterparts in other countries
D.American young are obssessed with the incessant quest for material comforts

根据以下资料，回答下列各题： It has been justly said that while“ we speak with our vocal organs we__1___wlth our whole bodies．”All of US communicate with one another___2___，as well as with words. Sometimes we know what we’re doing，as with the use of gestures such as the thumbs’up sign to indicate that we _ 3_ ．But most of the time we’re not aware that we’re doing it．We gesture with eyebrows or a hand，meet someone else’S eyes and __4__ ．These actions we 5__are random and incidental．But researchers___6___that there is a system of them almost as consistent and comprehensible as language，and they conclude that there is a whole___7___of body language．__ 8__the way we move，the gestures we employ，the posture we adopt，the facial expression we___9___，the extent to which we touch and distance we stand___10___each other． Body language serves a variety of purposes．Firstly it can replace verbal mmunication， __ 11_\_with the use of gesture．Secondly it can modify verbal communication. Loudness and ___12 _ 0f voice is an example here．Thirdly it regulates social interaction：turn taking IS largely governed by onverbal_\_13___．Fourthly it conveys our emotions and attitude. This is _ 14__important for successful cross—cultural communication． Every culture has its own body language，and children absorb its nuances___15___with sDoken language．The way an Englishman crosses his legs is___16_ like the way a male American does it．When we communicate with people from other cultures，the body language sometimes help make the communication easy and_\_17___，such as shaking hand is such a _ 18__gesture that people all over the world know that it is a signal for greeting.But sometimes the body language can cause certain misunderstanding___19_ people of different cultures often have different forms of behavior. for sending the same message or have different_ 20__towards the same body signals．
A.address
B.reverse
C.converse
D.confer

What is the author’S attitude towards the market prospect of double．muscled fish？
A.Confident．
B.Ambivalent．
C.Expectant．
D.Indifferent．

____

A.included
B.including
C.include
D.inclusive