小题1:It is our d________ (责任,义务) to try to cut back on production and reduce the amount of things we make and buy. 小题2:Trees a________ (吸收) the carbon dioxide in the air to produce oxygen. 小题3:People have harmed nature through a________ (农业), fishing, hunting and tourism. 小题4:Many countries have hesitated to give p________ (准许,许可) for the production of GM foods, as they would rather be cautious with this new technology. 小题5:I feel really g________ (内疚的) because I made some cruel remarks too. |