How is the table salt we use obtained? The word "it" in the sentence "seawater directly beneath freshly formed sea ice has a hi

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问题 How is the table salt we use obtained?
The word "it" in the sentence "seawater directly beneath freshly formed sea ice has a higher salinity than it did before the ice appeared."(paragraph 4) refers to______.

选项 A、seawater
B、surrounding water
C、the salt in the water
D、the water

答案A

解析 判断题。代词it在这里指代seawater。
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