問題詳情


(A) extinct
(B) contribute
(C)what
(D) which
(E) attribute (AB) distinct (AC) combination (AD) complement      As its name suggests, Glacier National Park was shaped by glaciers, the sheets of ice that covered the planet thousands of years ago. This is __26___ gives the park its beautiful scenery of deep valleys, steep mountains, and calm, clear lakes. The glaciers also __27___ to the park’s rich ecosystem, providing a cold alpine home for many species.     However, the park has more than just glacial mountains. It actually contains three __28___ ecosystems in its 4,000 square kilometers of land. Along with the alpine glacier region, it includes areas of temperate forests and some of the last true plains in America. Because of this unusual ___29__, it is an important wildlife preserve. There are many endangered species within, such as the grizzly bear and the Canadian lynx, which survive comfortably even if they are __30___ elsewhere in America.
26

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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