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.
①人们的可支配收入增加，汽车的需求量会从D1向D2移动
②央视3·15晚会曝光某品牌汽车的质量和安全隐患，某品牌汽车的均衡价格会从E1向E2移动
③新能汽车的价格降低，传统能汽车的需求量会从D1向D3移动
④汽油的价格降低，汽车的均衡价格会从E1向E3移动
①考试时，铃声是紧张的②回家路上遇到了事故③在电视上观看天宫二号空间实验室成功发射，我们有自豪感④犯了错误，我们有羞愧感
一条导线中的电流为1.6A，在1秒内有____个电子通过导线横截面。(电子电量e=1.6×10-19C)
