Once thought to be (i)______the dawn redwood was rediscovered in the 1940’s, at which time its continued survival seemed (ii)___

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问题 Once thought to be (i)______the dawn redwood was rediscovered in the 1940’s, at which time its continued survival seemed (ii)______: today, however, it is commonly cultivated.

选项

答案B,E

解析 however说明前后反义重复。两空联动,同义重复;第二空与commonly cultivated(广泛种植)反义重复。natural自然的,precarious不确定的,inevitable必然的。答案选E。immense巨大的,extinct灭绝的,adaptable能适应的。答案选B。
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