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D The regular use of text messages and e-mails can lower the IQ more than twice as much as...

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principle   theory   argument   classification  
to buy mobile phones.  to update regular phones.  to use mobile phones less often.  to stop using mobile phones.  
at school  on their own  at all hours of the day  by means of reading and writing  
frequent opening of hatches to permit entry of fresh air  regular checks of bilge levels  use of ear plugs to dampen engine noise  frequent flushing of the water spray system with fresh water"  
take intercampus buses  read announcements  make use of the recreational facilities  obtain the next issue of the student newspaper  
children   programs   graduates   designs  
Use one hand to give any motion signal ,and place the other hand motionless in front of thehand giving the motion signal  Extend arm with the thumb pointing up ,and flex the fingers in and out for as long as theload movement is desired  First tap your elbow with one hand and then proceed to use regular signals  First tap the top of your head with your fist and then proceed to use regular signals"  
failure of regular navigation system  destruction of regular navigation systems  abandoning ship  maintaining regular navigation"  
regular   special   small   creative  
to buy mobile phones.  to update regular phones.  to stop using mobile phones.  to use mobile phones less often.  
believe   think   say   feel  
to buy mobile phones.  to update regular phones.  to use mobile phones less often.  to stop using mobile phones.  
talented   worried   learned   interested  
inform university people of important schedule changes  announce the new movies on weekends  remind students to use the new library services  tell campus personnel of their identification cards  
even full navigational equipment is expected to fail, it is not necessary to have emergencykit prepared  in regular navigation, an emergency kit is unnecessary  even no danger is expected in near future, an emergency kit should be prepared and placedon the bridge for immediate use  if full navigational equipment is expected to fail in near future, you should have anemergency kit prepared and placed in the chart room or on the bridge immediate use  
normal  usual  regular  common  

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