黃金閱讀 22 - 英檢

Petroleum, consisting of crude oil and natural gas,
seems to originate from organic matter in marine sediment.
Microscopic organisms settle to the seafloor and accumulate in marine mud.


1．The word “accumulate” in the passage is closest in meaning to
○Grow up
○Build up
○Spread out
○Break apart

A 還是 B 一直很困擾我

請問這種該如何判斷呢？

thanks

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