正确答案: B

上海

题目：既是沪宁杭工业区的核心，也是全国最大的工业城市的是：

解析：B

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举一反三的答案和解析：

[单选题]19．

easier

[单选题]2．—Where have you been this morning?—I've been_________ my purse．

looking for

[单选题]Nowadays science fiction isn’t as ___________ as cartoons among teenagers．

popular

[单选题]7． Mary wants to be a teacher． She’s going to get_________

．

good grades