62. A) generated B) evolved

　　C) born D) originated

　　63. A) valuable B) appropriate

　　C) convenient D) favorite

　　64. A) attainments B) feasibility

　　C) entertainments D) evolution

　　65. A) essential B) available

　　C) reliable D) responsible

　　66. A) confirm B) inform

　　C) claim D) convince

　　67. A) for B) from

　　C) of D) with

　　68. A) organizations B) organisms

　　C) humans D) children

　　69. A) potential B) performance

　　C) preference D) passion

　　70. A) as B) just as

　　C) like D) unlike

　　71. A) ideological B) biological

　　C) social D) psychological

　　72. A) recommendation B) reference

　　C) reaction D) reviews

　　73. A) Thus B) However

　　C) Indeed D) Moreover

　　74. A) various B) different

　　C) advanced D) lower

　　75. A) revealed B) exposed

　　C) engaged D) involved

　　76. A) regulations B) formations

　　C) rules D) constitutions

　　77. A) Although B) Whether

　　C) Since D) When

　　78. A) distinguished B) different

　　C) protected D) isolated