分享就是把自己有价值的东西提供给别人，分享意味着失去。（ ）
我国科学家成功的将苏云金芽孢杆菌的虫基因导入棉花细胞中，培育的抗虫棉对棉铃虫等害虫毒杀效果高达80%〜100%．
The Great Wall has such great that thousands of tourists come to visit it every day.
