题目

完形填空（20 分） 阅读下面短文，掌握其大意，然后从下列各题所给的A、B、C和D四个选项中，选出最佳选项。 Many people of my generation(代，一代) say that there is no hope for the future because of the way that  11   people behave today. Their first argument（论点） is that when we were young we used to look after the   12   people in our community and help them. They also say that young people today don’t   13   about anything or anyone. However, I think the reason why we looked after older people was that we had no  14   . Peopl关于细胞分裂的图像，下列说法正确的是（    ）A．a图与b图所示细胞染色体数不同，染色单体数相同B．b图和c图所示细胞各含有2个四分体C．c图和d图所示细胞具有等对数的同源染色体D．图中所有细胞可以属于同一生物体