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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Just over three years old and about four-feet tall. Methuselah is growing well. "It’s lovely." Dr. Sarah Sallon said of the date palm，whose parents may have provided food for the besieged Jews at Masa...
A.
Discovering new species.
B.
Protecting rare species.
C.
Restoring extinct species.
D.
Reforming existing species.