28. A. but B. how C. since D. now

　　29. A. evaluation B. communication C. punctuation D. consideration

　　30. A. eye B. heart C. head D. question

　　31. A. scientists B. they C. psychologists D. subjects

　　32. A. mind B. memory C. information D. direction

　　33. A. if B. until C. unless D. except

　　34. A. retrieved B. memorized C. absorbed D. committed

　　35. A. how B. that C. if D. when

　　36. A. over B. up C. off D. in

　　37. A. it B. them C. us D. themselves

　　38. A. relaxed B. tired C. responsible D. capable

　　39. A. shift B. shut C. play D. focus

　　40. A. eyes B. cars C. lights D. blinks

　　答 案

　　21-25 BCDDA 26-30 BADCC 31-35 DCBDB 36-40 ADCAA