The market for (manufactured goods) is (which) economists call "imperfect," because each company has its own style; and all of t

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问题 The market for (manufactured goods) is (which) economists call "imperfect," because each company has its own style; and all of the arts of advertisement and salesmanship are devoted (to making) it (even more imperfect) by attracting buyers to particular brand names.

选项 A、manufactured goods
B、which
C、to making
D、even more imperfect

答案B

解析 (改为: what)
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