According to the passage, the Muir Glacier has retreated because ______. [br] Th

游客2023-10-07  39

问题 According to the passage, the Muir Glacier has retreated because ______. [br] The snowline’s retreat means that it is getting ______.

选项 A、higher
B、lower
C、wider
D、narrower

答案 A

解析 根据第一段最后两句“Secondly,rising temperatures have been causing the snowline to retreat on mountains all over the world.In Peru,for example,it has risen as much as 2,700 feet in 60 years”本句中retreat和risen是相对应的,所以A选项符合题意,故为正确答案。
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