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A. . People still remember it now.
B. . People had to give up bathing.
C. . There still exist its lingering effects.
D. . Millions of trees were chopped down.

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Questions 4 to 5 are based on the passages you have just heard.

A. . Double their revenues.
B. . Provide creative ideas.
C. . Expand business cooperation.
D. . Improve business efficiency.

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A. . In Beijing.
B. . In Shanghai.
C. . In Shenzhen.
D. . In Hong Kong.

Questions 6 to 8 are based on the passages you have just heard.

A. . Ceres and Mars.
B. . Ceres and Vesta.
C. . Vesta and Mars.
D. . Mars and Jupiter.

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A. . Life.
B. . Water.
C. . Ice.
D. . Atmosphere.

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