Found only in the Western Hemisphere and surviving through extremes of climate, hummingbirds’ range extends from Alaska to Tierra del Fuego, from sea- level rain forests to the edges of Andean snowfields and ice fields at altitudes of 15,000 feet.
(A) Found only in the Western Hemisphere and surviving through extremes of climate, hummingbirds’ range extends
(B) Found only in the Western Hemisphere, hummingbirds survive through extremes of climate, their range extending
(C) Hummingbirds, found only in the Western Hemisphere and surviving through extremes of climate, with their range extending
(D) Hummingbirds, found only in the Western Hemisphere and surviving through extremes of climate, their range extends
(E) Hummingbirds are found only in the Western Hemisphere, survive through extremes of climate, and their range extends
我选了E，OG解释： This sentence makes three points about hummingbirds: they live in the Western Hemisphere, they survive extreme climates, and their range is wide and varied. 平行结构，但真的不是太明白为什么E错了，B是对的，B中的their extending的句式结构和前面的也没有地方是平行啊？求帮助！
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