填空：
（1）施莱登和施旺共同创建的“细胞学说”，阐述了动植物结构和功能的基本单位是____ ．
（2）影响生物生存的因素主要有____因素和____因素．
（3）常用的玻片标本有____ 、____和____三种．
（4）在制作临时装片时，所要观察的材料必须是____ 而____ 的．
（5）生态系统中物质和能量是沿着____ 和____ 流动的．
①说明我国的国际地位已经发生改变
②能够激发强烈的民族自豪感、自信心
③展现了改革开放给我们带来的变化
④启示我们美好的生活要靠艰苦奋斗
一个古生物学家研究岩石层中的化石层，鉴定出一个物种。他认为这个物种在一个较长的历史年代中没有发生什么变化。他做出这个判断的依据是（）
The other day, I met an old man whose name was Ted, 91 years old. He told me about his____(believable) unusual story. He had lived through the Great Depression, served in the defence force and worked on____farm. He was so knowledgeable that he knew a lot in many areas of life. He was building model carts(手推车)that day. His pale hands reached out to a folder on the table, and he____(take) out some photos. In the photos I saw his collection of model carts. Ted took me through each photo and explained____was in each photo. He started telling me about how he cut steel____(build) his model carts. He seemed very____(enthusiasm). He gave me some valuable life____(lesson). He repeatedly kept saying that ____(learn) is very important in life.____(impress) by his love and enthusiasm for life at the age of 91, I realized that there can't be any barriers in life____we impose (把……强加于) those barriers on ourselves.
