Question 1
下列哪项活动是导致全球气候变暖的主要人为因素?
- A过度使用太阳能
- B大规模砍伐森林导致碳汇减少
- C火山喷发释放大量气体
- D臭氧层空洞的扩大
Answer: B. 大规模砍伐森林导致碳汇减少
大规模砍伐森林减少了植物的光合作用,降低了大气中 的吸收量,是导致温室效应加剧的主因之一。
UEC Junior 3 · Geography
初三Geography · 环境问题 (Environmental Issues)
环境问题 (Environmental Issues) is part of the UEC Junior 3 Geography syllabus. Practice the MCQs here to sharpen your exam technique — each question comes with a worked explanation.
Free sample questions
Question 1
Answer: B. 大规模砍伐森林导致碳汇减少
Question 2
Answer: C. $ ext{CO}_2$
Question 3
Answer: B. $ ext{SO}_2$和$ ext{NO}_x$
Question 4
Answer: B. 阻挡紫外线照射到地球表面
Question 5
Answer: C. 温室效应是造成海平面上升的原因之一
Other Geography chapters
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