At the upper timberline the trees begin to become twisted and deformed. This is particularly true for trees in the middle and upper latitudes, which tend to attain greater heights on ridges, whereas in the tropics the trees reach their greater heights in the valleys. This is because middle- and upper- latitude timberlines are strongly influenced by the duration and depth of the snow cover. As the snow is deeper and lasts longer in the valleys, trees tend to attain greater heights on the ridges, even though they are more exposed to high-velocity winds and poor, thin soils there. In the tropics, the valleys appear to be more favorable because they are less prone to dry out, they have less frost, and they have deeper soils.
문제 :
According to paragraph 3, which of the following is true of trees in the middle and upper latitudes?
- A.Tree growth is negatively affected by the snow cover in valleys
- B.Tree growth is greater in valleys than on ridges.
- C.Tree growth on ridges is not affected by high-velocity winds.
- D.Tree growth lasts longer in those latitudes than it does in the tropics.
정답이 A라는데 A는 As the snow is deeper and lasts longer in the valleys, trees tend to attain greater heights on the ridges 라는 문장에서 식물이 크게 자란다-> 악영향을 미친다고 보기 어렵지 않을까요?
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