【勇于承担】

人生须知负责任的苦处，才能知道尽责任的乐趣。

——梁启超

请你结合所学知识，说说应该如何做一个负责任的公民。

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.

This one is ______ Amy.

下列有关水对生命活动影响的叙述，不正确的是      (　　)
①越冬的植物体内自由水与结合水的比值下降，有利于抵抗不利的环境条件
②细胞内自由水含量的降低是细胞衰老的特征之一
③癌细胞中自由水含量较正常的细胞低
④当人体缺水时，血浆的渗透压会降低，从而产生渴觉