题目

生物多样性是人类赖以生存的基础，是国家生态安全的基石。保护生物多样性首先要保护生物的栖息环境，这种措施是（   ） A．保护基因的多样性                                 B．保护生物种类的多样性 C．保护生态系统的多样性                          D．保护人类所需生物的多样性补全对话从方框中选择最佳选项完成对话。   A. Let me see.   B. we should do brainstorming about how it will help the undereducated young people in the countryside.   C. I agree with you completely.   D. I just can't wait to begin it!   E. such as donating money to the poor children and volunteering to teach the poor children,etc.A： Hi,John!We are going to finish a task about an ad for Project Hope (希望工程) .B： 1 How shall we make it?A： We should firstly let the readers know the background and the purpose of it.B： Absolutely!And then,2 A： Yeah,actually Project Hope can do many things,3B： Right,and how can we make the ad more perfect? A： 4 We can download some pictures from the Internet. Using different colors for each section will be better.B： So an attractive advertisement is done.A： Bingo!5 1. 2. 3. 4. 5.