A

    On a very sunny afternoon this summer, Laura was driving home. When she was near a crossing, Laura found one of the traffic lights didn't work. And a policeman was standing in the middle of the crossing. There were too many cars. And the weather was too hot. The fact was that he was doing a hard job. He was busying directing(指挥) traffic.

    Laura saw a store on the corner. She wanted to buy some water for the policeman. But it was a little shy of her to do it for a stranger. At last Laura decided to go to the store to buy some water. After buying water, she found it was not easy to give the water to the policeman in the busy crossing.

    But Laura still wanted to have a try. She drove into the crossing and gave him the water. Though he was too busy to take the water, he broke into a smile and said, "Thank you."

    Laura went home by car and felt better. It felt good to spread the positive energy(正能量), and it was the least she could do.

根据短文内容，判断下列句子正误。

阅读下列材料，回答问题。

材料一  天朝物产丰盈，无所不有，原不藉外夷货物以通有无。

——《粤海关志》

材料二  浙民习俗易嚣，洋商错处，必致滋事。   ——《清高宗圣训》

材料三  此辈（注：华商和商人）多系不安分之人，若听其去来任意，伊等益无顾忌，轻去其乡而漂流外国者益众矣。嗣后应定限期，若逾期不回，是其人甘心流移外方，无可吝惜，朕亦不许其复回。如此则贸易欲归主人，不敢稽迟在外矣。                            ——《清文献通考》

【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。