单选题The passage is primarily concerned with ______.Ainforming readers of different sea creaturesBdescribing predatory microscopic organismsCsolving some long-lasting mysteries about the seaDdiscussing the environment for various fishes
单选题
The passage is primarily concerned with ______.
A
informing readers of different sea creatures
B
describing predatory microscopic organisms
C
solving some long-lasting mysteries about the sea
D
discussing the environment for various fishes
参考解析
解析：
文章主旨题。通读全文可知本文主要围绕Microscopic organisms展开，该篇文章谈到这种微生物的发现；它如何杀死鱼类；对人类有何影响以及进一步研究的必要性。因此选项B符合题意。
文章主旨题。通读全文可知本文主要围绕Microscopic organisms展开，该篇文章谈到这种微生物的发现；它如何杀死鱼类；对人类有何影响以及进一步研究的必要性。因此选项B符合题意。
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