20. The choir stood in four rows according to their ____ heights A. respective B. respectable C. respected D. respectful<respective>respective 单独的,单个的</respective><respectable>re...
19. Color-blind people often find it difficult to ______ between blue and green. A. separate B. distinguish C. compare D. contrast<distinguish>distinguish 区别, 区分distinct 清楚的,明显的distress 痛
18. Mr Johnson had given no _____ that he was intending to resign. A. distinction B. direction C. information D. indication<resign>resign 辞职assign 分配design 设计signify 点上标记、表示significant
17. A _____ heart beats around seventy-six times a minute. A. delicate B. normal C. formal D. peculiar <normal>normal 正常的abnormal 不正常的enormous 大量的, 相当多的, 巨大的</normal><delicate>delic
16.Mr Russel is a good teacher, but he often gives ____ lectures. A. excellent B. extensive C. sound D. tedious<tedious>tedious 很郁闷的、很惹人烦的、单调乏味的</tedious><excellent>excellent 优秀的、
15. Worldwide demand for more _____ technology continues to grow. A. subtle B. experienced C. sophisticated D. refined<sophisticated>sophisticated 复杂的、久经世故的</sophisticated><subtle&g...
14.They work long hours but don't earn enough to ensure a _____ living for themselves and their families. A. reticent B. decent C. innocent D. descent<reticent>reticent 沉默寡言的</reticen...
13. The outward _____ may increase as anti-immigrant fever spreads in the united states. A. departure B. exodus C. contagion D. adage<departure>departure 离开depart 离开</departure><exo...
12. The evidence showed that the hanged man could be ____ of murder. A. ignorant B. innocent C. indecent D. tolerant<innocent>innocent 无辜的、天真的</innocent><ignorant>ignorant 忽视的、无知...
11. The most advanced communication ______ can pass information to any member state in no more than five seconds. A. furniture B. facilities C. equipment D. ornaments <equipment>(a piece of) ...
10. Many distinguished men have ____ from slums. A. emanated B. appeared C. loomed D. emerged<slum>slum 贫民窟</slum><emanate>emanate 流出、飘出garlic 大蒜</emanate><appear>app...
9. This can _____ the worry between a couple that they don't understand each other. A. release B. relent C. relieve D. relay<couple>couple 夫妇spouse 夫妇、配偶consort 配偶 </couple><rel...
8. The education provides them _____ to economic progress. A. admission B. acceptance C. access D. approach <progress>progress 进步、进行aggress 攻击、侵略aggressive 攻击性的、侵略性的congress 国会、