地理 GEOG｜2021 DSE 試卷一 MC 答案及解題影片｜2021 DSE Paper 1 MC Answers and Solution Videos

地殼 ( X ) 的主要化學成分為矽、鋁和鎂，地幔 ( Y ) 則為鐵和鎂
Crust ( X ) is mainly composed by Silica, Aluminum and Magnesium, while Mantle ( Y ) is mainly composed by Iron and Magnesium

第八題 Question 8

正確答案 Correct Answer : B ( 23% )

重點概念 Important Concepts

兩個大陸板塊碰撞時並沒有俯衝，亦沒有額外岩漿，因此並不會導致活躍的火山作用
Since no subduction can be found in continent-continent collision, no extra magma is produced. Hence, active vulcanicity would not be resulted.

地表下的是「岩漿」，地表上的是「熔岩」；火山由冷卻和凝固後的「熔岩」形成
“Magma” is below the earth’s surface while “lava” is always on the earth’s surface; Volcanoes are the result of cooled and solidified lava

火山和熔岩高原皆為噴出火山作用產生的地形
Both volcanoes and lava plateau are resultant landforms of extrusive vulcanicity

「正確」答案 “Correct Answer” : C ( 18% )

本題已被考評局取消。
This question is deleted by the HKEAA.

正確答案 Correct Answer : B ( 86% )

重點概念 Important Concepts

	焚化 Incineration	堆填 Landfill
空間需求 Space requirement	較小 Small	較大 Larger
操作中能源使用量 The amount of energy used during operation	較多 More	較少 Less
污染地下水的可能性 The possibility of contaminating underground water	較低 Lower	較高 Higher

正確答案 Correct Answer : D ( 55% )

正確答案 Correct Answer : C ( 73% )

正確答案 Correct Answer : D ( 43% )

重點概念 Important Concepts

相片所示的農業活動為遷移耕作中的「刀耕火種」
The farming activity shown in the photo is “slash-and-burn” in shifting cultivation.

農場面積的增加、耕作集約度的增加及更短的休耕期均會對熱帶雨林造成更大的影響
Increase in the farm size, increase in the farming intensity and shorter fallowing period will all increase the impacts to tropical rainforest.

正確答案 Correct Answer : A ( 74% )

重點概念 Important Concepts

X 為北極地區 / 北冰洋
X is located in the Artic.
永久凍土融化的確有利於開採地下的石油資源。
Thawing of permafrost really facilities extraction of fossil fuel resources.
北冰洋海洋融化的確會縮短航運路線。
Melting of sea ice in the Arctic Ocean can really shortens shipping routes.
氣候變化下，大部分高緯度地區如極地，降雨量會增加。
Under climate change, rainfall increases in most of high-latitude regions like polar region.