关于“绿叶中色素的提取和分离”实验的叙述，不正确的是               (    )

***在迎接2010年新春座谈会上强调，要完成今年各方面的任务，必须依靠包括各党派、各团体、各民族、各阶层、各界人士在内的全国人民团结奋斗。希望各民主党派、工商联和无党派人士积极履行参政议政、民主监督职能，不断提高建言献策水平，继续为全面建设小康社会、加快推进社会主义现代化贡献智慧和力量。***的讲话表明
①我国实行多党联合执政
②民主党派和共产党是亲密友党
③人民政协是我国政权组织形式
④我国实行共产党领导的多党合作制度

     Jim Carrey has become one of the most well-known faces in the world. And it is because of his face that he has made such achievements.
Jim Carrey was born in a working class family, and life was poor for young Jim. While in his teens, he had to take a job as a doorkeeper when his father lost his job, and finally he dropped out of school. At that time, he developed his sense of humour to help him deal with anger at the world.
      He was often alone. He said he didn’t have any friends because he didn’t want any. At 15 he started performing at a comedy club. Later he moved to Los Angeles and there he got the attention from a famous comedian, Rodney Dangerfield, and his life started to change.
Jim Carrey got his big break in 1990, when he played a role on the new comedy show, In Living Color. He broke into films in 1994. It was the year of Funny Face. First there was Pet Detective, a success that showed Carrey’s comic style. Next came The Mask, which was another success for him.
      Jim Carrey has come a long way from his unhappy childhood. In fact, he seems to be having a second childhood now. The future looks good for him. He has developed a large crowd of fans and he also has proved his ability to get through a storm and come out on top, which is important for any person.

下图表示某物种迁入新环境后，种群增长速率随时间的变化关系，下列有关叙述，不正确的是(    )

根据课文《钱学森》填空。

钱学森1934年毕业于____，随后____留学，师从____。他的愿望是：早日____，用____为祖国建设服务。1955年9月17日，钱学森终于踏上了____ 。他站在甲板上深情地____着远方，想到前方就是自己____的祖国，心潮澎湃。钱学森回国后，为我国____的研制和发射作出了卓越的贡献，被誉为“____”。