As Europe’s economy has 【<strong>soured】</strong>, free-market ideas that are new to much of Europe face new challenges.

As Europe’s economy has 【soured】, free-market ideas that are new to much of Europe face new challenges.

As Europe’s economy has 【soured】, free-market ideas that are new to much of Europe face new challenges.

A.increased

B.declined

C.sky-rocketed

D.tasted

正确答案是B

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