根据图2—2—2所示细胞模式图回答下列问题：

(1)这是____ 细胞。

(2)控制细胞与外界进行物质交换的是  ____ 。

(3)细胞生命活动的控制中心是  ____ 。

(4)  _____ 是细胞进行生命活动的重要场所。

(5)起保护和支持作用的结构是  ____ ，主要由____ 组成。

(6)⑤____ ，其中的液体称为_____ 。

(7)③____ 含有____ ，是_____ 的场所。

下列关于秦岭—淮河分界线叙述错误的是（　　）

完形填空

    Once there was a father and a son. They were ill-tempered(坏脾气的) and never gave way to  1 .One day the father 2 to ask some friends to dinner in his house. He 3 his son to buy some meat in town. When the son walked towards the town gate, a man was coming from the outside. The gate wasn't 4 enough to let two men in and out at the same time. But neither of 5 would give way to the other. They stood straight face to face inside the gate hour after hour. But the father was worried. “What shall I do? My son hasn't 6  yet. I can't wait any more.” He wanted to know what was the 7 with his son. So he left his friends at home, and went to town 8 his son. “You may first take the 9 home for my friends .Let me 10 here instead.” he said to his son when he knew what had happened.