问题
填空题 案例分析题
下面为两个特殊的生态系统能量金字塔示意图。回答下列问题:
生态系统中能量最终来源于(),进入生态系统中的能量最终以()形式散失。
答案
参考答案:太阳能;热能
下面为两个特殊的生态系统能量金字塔示意图。回答下列问题:
生态系统中能量最终来源于(),进入生态系统中的能量最终以()形式散失。
参考答案:太阳能;热能
选用方框中所给单词的适当形式填空。 | |
1. We'll start as soon as our trousers ___________. 2. —________you _______your shirts? —Not yet. They are so wet. 3. They tried and tried and finally they ____________ 4. We wonder what we can do ________ her. 5. The police ________________the scene for some clues now. 6. My teather told us that sound ________more slowly than light. |