第22题: [单项选择]From the passage we understand that conventional plant breeding produced ______. A. a potato-tomato hybrid B. new plant technology C. self fertilizing D. less dramatic results than the new technology 参考答案:D 答案解析:[解析] 本题问及传统作物育种的后果如何。文章后两段讲的是利用基因工程能培植出传统农业无法达到的引人注目的结果并且前景无限。反过来说,即传统农业育种不如新育种技术结果吸引人,故选D)。选项A),C)都