Unit 4 Text B  Short-term Memory     There are two kinds of memory : short-term and long-term .Information in long-term memory can be recalled at a later time (when it is needed) . The information may be kept for days or weeks . Sometimes information in the long-term memory is hard to remember . Students taking exams often have this experience .           psychiatrist    human rights   device/equipment/facility   mouse mice   set free   representative   advantage/ disadvant   keep record/break record   loud-speaker   awake/afraid/asleep/aloud   way/means/approach   social security system   education system   compare with   compare to   look after/ look up/ look into/ look at/ look over/ look on—looker on/ look around/look down upon   turn on/ off / up //down   begin to do sth. Begin doing   start to do sth.—start doing   please remember to turn off the light.   I remembered seeing you somewhere   Don’t forget to bring you book next time.   I forgot borrowing your money   Don’t forget to bring your money   I like swimming.   I like to swim now.   I hate smoking.   I hate to smoke now.   Regret to do/ regret doing       Late—later—latest—latter   He is a good worker with much experience.   I had two unforgettable experiences last summer.