I'm Jim. Today is my birthday. I want to thank my family for their love. So I cook dinner for them. I know my mother likes hamburgers and salad. But my father likes chicken and tomato soup(汤). I have a brother. He likes hamburgers, too. But he doesn't like salad. He likes carrots. I have a sister, too. She likes fish(鱼肉) and bread. I like chicken and strawberries. I will buy these things for the birthday party.

读句子，理解划线词语的好处。

它们小心翼翼地向四周试探了一番，便迅速逃离了。

根的生长是连续的。图A表示的是当前根的某一部位细胞的形态，过一段时间，它的形态将是图   ____   (填字母)所示的细胞形态。