The key findings of the new study show that restoring and ____land can have significant co-benefits for all Sustainable Development Goals.
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The key principle of sustainable development ____all others is the integration of environmental, social, and economic concerns into all aspects of decision-making.
Mobilizing indigenous people's wealth of ancient knowledge can teach us valuable lessons on how to ____our environment – a necessity, as we enter the final decade of ambitious action to deliver the Sustainable Development Goals by 2030.
1951年1月21日,年轻的人民空军迎来了与强大的美国空军的首次空战。在第一次战斗中,就取得了击落()飞机的战绩?
A. 一架
B. 两架
C. 三架
D. 四架
1951年6月,朝鲜战场上的双方进入()阶段,地面战线稳定在“三八线”附近。
A. 战略进攻
B. 战略防守
C. 战略反攻
D. 战略相持