◎ 题干
Next, John Snow ______ the source of the water for these two streets and found it came
from the polluted river.
A. looked into
B. looked up
C. looked after
D. looked around
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Next, John Snow ______ the source of the water for these two streets and found it came from the polluted river.A. looked into B. looked up C. looked after D.…”主要考查了你对  【动词短语】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。