题目

After a long day at school，I walked home with my heavy schoolbag.Sleepy and __16__，I threw my things on the couch and grabbed something from the  __17__ to eat.I passed by the living room and wished I could watch TV，but I knew my  __18__  would take me the whole night.I took my schoolbag and went  __19__  to my room.I tried to understand chemistry and __20__ sleepiness at the same time.I was stressed out and __21__.I wanted something to cheer me up. Later，I __22__ the sound of the front door opening.And I waited for it－the sound of my mom singing.__23__ she sings off­k因纽特人属于 ( )A. 黄色人种 B. 白色人种 C. 黑色人种 D. 混血人种