At the same time, the _______ causes for known declines and disappearances of species often involves experimentation, data analysis, and scientific detective work.
A.
identifying
B.
pondering
C.
nourishing
D.
simplifying
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参考答案:
举一反三
【单选题】阅读下面的程序: class Test: data1 = 10 def __str__(self): return "data1 = %d" % (self.data1) test = Test() print(test) print(repr(test))上述程序最终执行的结果为()。