题目

阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一个完整的短文。所续写短文的词数应为150左右A Mother'sLoveMy mom only had one eye. I hated her. She was such an embarrassment. Shecooked for students and teachers to support the family.There was one day during elementary school (小学) when my mom cameover to say hello to me. I was so embarrassed.How could she do this to me? I ignored her, threw her a hateful look andran out. The next day at school one of my classmates said, Your mom onlyhas one eye!I wanted to bury myself. I also wanted 某一瓢虫种群中有黑色和红色两种体色的个体，这一性状由一对等位基因控制，黑色（B）对红色（b）为显性。如果基因型为BB的个体占18%，基因型为Bb的个体占78%，基因型为bb的个体占4%。基因B和b的频率分别是 （    ） A．18%、82%         B．36%、64%       C．57%、43%      D．92%、8%