微山湖是山东境内的一个面积较大的湖泊，二十年前这里是碧波万顷、鱼儿满湖、野鸭成群，还有“接天莲叶无穷碧，映日荷花别样红”的美丽景象。二十年来，湖区四周县市的工业快速发展，城市居民激增，因而大量的工业废水、生活废水、垃圾涌入该湖。湖水变得不仅很浑浊，而且腥臭难闻。据有关专家说，近几年来，微山湖中已消失了一些物种，例如四鼻孔鲤鱼、野鸭、水螅等。上述现象说明的道理主要是[ ]
A．掠夺式的开发是破坏生物多样性的主要原因
B．环境污染是破坏生物多样性的重要原因
C．外来物种入侵破坏了生物多样性
D．环境教育缺乏是破坏生物多样性的根本原因
答案：B
请阅读下列的相关信息，并按照要求匹配信息。请在答题卡上将对应题号的相应选项字母涂黑。 以下是6条有关颜色偏好和性格关系的描述。 A
小题1:Create a warm and personal working atmosphere; establish a peaceful working environment and try to avoid conflict(冲突); allow them freedom to express their feelings; Praise them for their creativity. 小题2:Assign them work needing detailed planning; define the tasks in clear terms; provide a stable work environment and avoid sudden change; issue rules and regulations; provide good examples. 小题3:Assign them work which needs analytical thinking and problem-solving skills; encourage them to think independently and take their ideas to the next step. 小题4:Assign them work which is action-packed; provide opportunities which need skills and challenges; do not let them do the same job for a long time. 小题5:Assign them work which needs full energy; provide competitive opportunities; let them know that they will be promoted if they do brilliantly. |