单项选择题

Questions 19 to 21 are based on the conversation you have just heard.

A. In 1995.
B. In 2000.
C. In 1999.
D. In 2001.
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单项选择题
A. Daily dose of vitamin C can improve acute-care patients’ mood. B. Daily dose of vitamin D can improve acute-care patients’ mood. C. Both vitamin C and D help to improve acute-care patients’ mood. D. There is still not firm proof to make sure the exact effects of Vitamin C and D.
A. Daily dose of vitamin C can improve acute-care patients’ mood.
B. Daily dose of vitamin D can improve acute-care patients’ mood.
C. Both vitamin C and D help to improve acute-care patients’ mood.
D. There is still not firm proof to make sure the exact effects of Vitamin C and D.
单项选择题
A. Find a new repair shop. B. Take a bus to work.C. Hire a car. D. Buy a different car.
A. Find a new repair shop.
B. Take a bus to work.
C. Hire a car.
D. Buy a different car.
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