单选题According to lines 50－58 of Passage 2, microevolution ______.Ahas never actually been observed, but is believed to be theoretically possibleBis the series of small changes that transforms one species into anotherClacks evidence, and therefore should not be considered a scientific factDis an evolutionary process involving small changes within a speciesEoccurs wherever there are environmental changes in a species' habitat
单选题
According to lines 50－58 of Passage 2, microevolution ______.
A
has never actually been observed, but is believed to be theoretically possible
B
is the series of small changes that transforms one species into another
C
lacks evidence, and therefore should not be considered a scientific fact
D
is an evolutionary process involving small changes within a species
E
occurs wherever there are environmental changes in a species' habitat
参考解析
解析：
文中最后一段第一句提到微进化是“the existence of small changes within a species,”这个过程，故选D项。
文中最后一段第一句提到微进化是“the existence of small changes within a species,”这个过程，故选D项。
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