2. 外语
  3. The passage centers on ______. The order of coming into being on the island is ______.

The passage centers on ______. The order of coming into being on the island is ______.

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问题 The passage centers on ______.
The order of coming into being on the island is ______.
选项 A、soil, plants and animals
B、soil, little creatures and plants
C、soil, birds and plants
D、soil, human beings and animals
答案A
解析 文章依次论述了火山的爆发——岛屿的形成——沙土的形成——动植物的生长，而植物的产生是动物生存的前提(only plants could grow first：植物必须先于其他生物产生)。A项“土壤、植物、动物”的顺序正确。
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