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Passage One Questions 26 to 29 are based on the passage you have just heard

A．To increase product sales.
B．To make a product much better.
C．To spend more money.
D．To reduce the production.

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Newton believed that the path of a planet going around the sun was ______ called an ellipse

Passage One Questions 26 to 29 are based on the passage you have just heard 您的浏览器不支持 audio 元素。