题干

2014年3月30日,广东茂名街头反PX(“对二甲笨”、可燃、低毒化合物)游行引发关注。同一时期,百度百科也上演PX词条争夺战,以清华大学化工系学生为主的学院派,昼夜捍卫PX“低毒”属性,不断更正PX“剧毒”、“巨毒”说明,并最终取得了这场词条保卫战的胜利。原来,在茂名反PX游行事件发生的当天,一网友悄然将百度百科词条中PX毒性由“低毒”改成“剧毒”,这一个字的改变便成了PX词条保卫战的导火索。清华学子昼夜捍卫PX词条“低毒”属性的事迹启示我们要(   )
①加强科普宣传,提高公民科学素养   ②树立社会责任感,积极承担社会责任
③坚持正确行为,摒弃错误行为           ④他们的行为既履行了道德义务,也履行了法定义务 

A:①②③

B:①②④

C:①②③④

D:②③④

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A

同类题3

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    A lot of teenagers are good at art at school, but how would you feel if people called you “the new Picasso(毕加索)” or if presidents and other famous people collected your paintings?

    Alexandra Nechita was ten when her paintings became famous all over the world. She visited Britain, France, Italy, Japan, Australia, New Zealand and her family's native place (祖籍) Romania where 5,000 fans came to see her at the airport. Alexandra said, “When it all started, I was moved. It was very exciting and I loved the traveling, but I got very tired. And I missed home.”

    Alexandra is a good student. Her studies always come first. She only starts painting after she's done her homework. She works on two or three paintings at a time. The paintings sell for thousands and Alexandra's parents have given up their jobs to work for their daughter. Life for the Nechita family is very different from what it was like a few years ago. Alexandra's father Nike left Romania for political (政治的)reasons in 1985. At first he tried his best to learn English and had different kinds of low-paid jobs. In 1987, he brought his wife and Alexandra, who was then 18 months old, to America. The family was very poor. Alexandra began to draw at the age of three.

    She was drawing for four or five hours a day. Soon people offered(提出) to buy her paintings and she had her first art show at the age of eight. Stories about this child appeared(出现) in the newspapers and television. They now live in a large house with a swimming pool. Her mother said, “We started without anything, but thanks to Alexandra, we have everything we ever dreamed of.”