题目

阅读下面短文，从短文后各题所给的四个选项（A、 B 、C 、D）中，选出可以填入空白处的最佳选项。 My mother seemed to be able to make dolls (洋娃娃) out of anything. She made some dolls for me and my two elder sisters. I 1 playing with them, but still, secretly, I hoped for a store-bought 2like the one our rich cousin had. Her doll 3 open and close its blue glass eyes and even say Mamma. I 4 stopped admiring it and hoping to have one. However, my dream 5came true when I was six. One day my father came back from his business trip with three 6 dolls! They w不同的植物．开花的年龄不同，开花的季节和时间也不一样．冬小麦秋季播种萌发，第二年夏初开花和结果，对这类植物来说，秋末冬初的低温就成为开花必需的条件；美洲烟草在夏季日照时间长，植株高达3m一5m也不能开花，但生长在冬季温室中，日照时间短，植株高不到1m即可开花．（1）无论花的形态怎样，花的主要结构是    ．（2）从短文中可以得知，影响开花的外界条件主要有温度和    ．（3）播种的“小麦种子”是由    发育而成的．