二 16.B A A B B 21.D A A C C 26.B C D A B 三 31.A B C C D 36.B C D B D 41.D A B B C 46.D A C B D 四 51.A C C A C 56.B A D B D 五 61.swallow62.Absolutely63.opposed64.steady65.varied/varies66.anxiety67.glanced68.load69.mentally70.diversity 六 71.holding改为held 72.praised前加were 73.For改为to 74.去掉who 75.them改为us 76.learn后加from 77.will改为would 78.great改为greatly 79.对的 80.mark改为marks