For three quarters of its span on Earth, life evolved almost ______ as microorganisms.

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问题 For three quarters of its span on Earth, life evolved almost ______ as microorganisms.

选项 A、precisely
B、instantly
C、initially
D、exclusively

答案D

解析 本题为副词词义辨析题。Precisely意为"精确地;严格说来",instantly意为"立即地,瞬间地";initially意为"最初;开始";exclusively意为"专门地,仅仅"。根据题意,exclusively为最佳答案。
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