In 1852 Robert Angus Smith published a detailed report of the chemistry of rain in a large area around the city of Manchester, England, noting the city air becoming increasingly acidic as one would come closer to town.
noting the city air means that Robert Angus Smith was noting the AIR itself, and this is not the intended meaning
后半句 more 和increasinly重复 。。 E选项becoming 不对
长句不用从句用 becoming 一般不对
becoming 和 would 时态不对
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