问题
单项选择题
Passage 2
Which of the following is the main killer in Asian countries a. Infectious diseases. b. Parasitic diseases. c. Both a and b. d. Hereditary diseases.
答案
参考答案：D
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Passage 2
Which of the following is the main killer in Asian countries a. Infectious diseases. b. Parasitic diseases. c. Both a and b. d. Hereditary diseases.
参考答案：D