2. 外语
  3. The passage is mainly about ______. The first two sentences in the second paragraph tell us that ______.

The passage is mainly about ______. The first two sentences in the second paragraph tell us that ______.

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问题 The passage is mainly about ______.
The first two sentences in the second paragraph tell us that ______.
选项 A、producers can satisfy the consumers by mechanized production
B、consumers can express their demands through producers
C、producers decide the prices of products
D、supply and demand regulate prices
答案D
解析
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大学英语四级

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