cognate
【正确答案】：A cognate is a word in one language which is similar in form and meaning to a word in another language because both languages have descended from a common source. For example, English "mother，" "father" and "friend" are believed to be cognates of German " Mutter , " " Vater " and "Freund' .
评分标准：答对得3分；解释不当或举例出错，酌情扣分。
