题目

I learned to do wood work when I was very young. I remember I made my first project—a small table when I was 9 years old. I was so _________ of it that I looked upon it as if I had created a(an) _________. It was absolutely beautiful and it had taken me six weeks to_________  it. I could hardly wait to give it to Mother Winters as a(an)  _________ . She was the head mistress of our orphanage（孤儿院）, who was always kind but  _________  with us. As the tables were not dry from the clear coating(清漆), our woodworking teacher told us to wait a few days before taking them 某种鼠中，毛的黄色基因Y对灰色基因y为显性，短尾基因T对长尾基因t为显性，且基因Y或T在纯合时都能使胚胎致死，这两对基因位于不同的常染色体上。让多对黄色短尾鼠交配，所得后代中灰身长尾雄鼠的比例为 A．1/9        B．1/18          C．1/24             D．1/32