Brachiopods, clamlike bivalves of prehistoric times, were one of the most (i)___

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问题 Brachiopods, clamlike bivalves of prehistoric times, were one of the most (i)______ forms of life on the Earth: more than 30,000 species have been (ii)______from fossil records.

选项

答案 B,E

解析 冒号表示前后同义重复。第一空与more than 30,000(超过30,000种)重复,填入一个表示“种类多”的词.ornate华丽的,multifarious多种多样的,anachronistic过时的。答案选B。subtract拿走,catalogue列入/编入,extrapolate推断。代入第二空,答案选E.
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