专四专八考试

【单选题】{{I}}Questions 17 to 20 are based on the following passage.At the end of the passage, you will be given 20 seconds to answer the questions. Now listen to the passage{{/I}} When did chewing gum become popular in the United States
A、In 1890.
B．In 1819.
C．In 1870.
D．In 1817.

网考网参考答案：A
网考网解析：
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