2. 外语
  3. Scientists in India have discovered a way to make bamboo plants produce flowers in laboratory. The British【B1】______Nature recen

Scientists in India have discovered a way to make bamboo plants produce flowers in laboratory. The British【B1】______Nature recen

admin2013-03-11  91
问题     Scientists in India have discovered a way to make bamboo plants produce flowers in laboratory. The British【B1】______Nature recently reported the【B2】______event. In the wild it can take as long as 120 years for some kinds of bamboo to flower, and after the plant【B3】______its seeds it dies. The bamboo plant is used in many different ways. But because it takes so long to produce seeds, scientists never【B4】______it a traditional farm crop. The recent【B5】______in India may change that. The【B6】______was done at the National Chemical Laboratory in India. Three scientists cut two hundred pieces from two different kinds of bamboo plants; each was a few inches long. The tiny cuttings were placed in the【B7】______of coconuts milk, plant-growth hormone and other nutrients. Just a few weeks later, flowers began to【B8】______.【B9】______. Two weeks after that the plants began to produce seeds.【B10】______. One of them had not put the bamboo seeds in soil, but he believes they will produce plants. The Indian scientists now are planning experiments to see 【B11】______.
【B5】
选项
答案breakthrough
解析 由空前的形容词recent可知，本空应填一名词。
转载请注明原文地址:https://www.kaotiyun.com/show/3du7777K
0

大学英语四级

相关试题推荐
随机试题
最新回复(0)