根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    After Columbus discovered the New Continent(新大陆) and 1 back to his motherland, Spain, he was warmly 2. But not everyone felt  3 at Columbus' Success. Some people thought Columbus was only a 4 and what he had done could be done by any other seaman. One day, at a dinner, some self-important men did what they could to 5 Columbus unhappy, saying that he had only done the 6 thing in the world. Hearing this instead of jumping up angrily, Columbus took an 7 from a dish and asked,“Look, here, gentlemen, is there anyone here who can make this egg stand upright?” They tried one by one but none could. Then the egg 8  back to Columbus. He broke it a little, put the egg on the table and it stood upright. “What can be easier than this, gentlemen?” he said, “Now you will say it's so 9 that everybody can do it. Of course, because I have shown you now.” They looked at each other and talked 10.

农业是我国两千多年封建社会的立国之本，农业生产技术的革新历来受到重视。下列哪一幅图片反映了我国农业发展史上的一次革命（    ）

“塑料”是人类利用科学技术创造出来的新的物质，它诞生于（   ）

材料一：随着自我意识和独立性的增强，中学生的心理矛盾也会不断增多湖北省某中学全面贯彻党和国家的教育方针，开设心理健康教育课，利用课堂教学向学生传授相关的心理学知识，纽织学生进行积极的情感体验，让学生掌握自我调适的能力，使学生做到悦纳自我，保持积极乐观的精神面貌。
材料二：今年高考成绩公布以后，个别考生因成绩不如意选择了轻生，四川崇州一女生喝农药、割腕，辽宁营口一男生跳河，每一个年轻生命的陨落，都让人扼腕痛惜。