From the passage we know that ______.A、English belongs to Sino-Tibetan family
B、English belongs to Indo-European family
C、English was spoken by people before AD 450
D、English was spoken by the Anglo-Saxon invaders
【正确答案】：D
【题目解析】：事实细节题。由题干定位于第二段，由Scholars estimate that one-third of the world’s languages are of Indo-European origin可知B选项是错的；由Back around AD 450, when Julius Caesar was alive, English as we know didn’t exist可知C选项是错的；从最后一句话可知D选项是正确的；A选项无从得知。