Cars are important in the United States. Without a car most people feel that they are poor. And even if a person is poor he doesn't feel really poor when he has a car.Henry Ford was the man who first started making cars in large numbers. He probably didn't know how much the car was going to affect American culture. The car made the United States a nation on wheels. And it helped make the United States what it is today.There are three main reasons the car became so popular in the United States. First of all the country is a huge one. And many Americans like to move around.What is the most important reason that cars become popular in the United States?A. Because the United States is huge.B. Because public transportation is not so good.C. Because Americans like to be independent.D. Because Americans like to move around.

我们来一步一步分析这道题： --- ### **题干回顾：** 题目问的是：“**美国汽车变得流行最重要的原因是什么？**” 选项如下： A. 因为美国幅员辽阔。 B. 因为公共交通不是很好。 C. 因为美国人喜欢独立。 D. 因为美国人喜欢到处走动。 --- ### **文章内容分析：** 文章中提到： > "There are three main reasons the car became so popular in the United States. First of all the country is a huge one. And many Americans like to move around." 这句话明确指出： 1. 美国是一个**幅员辽阔**的国家。 2. 许多美国人**喜欢到处走动**。 这两个是汽车在美国流行的主要原因。而题干问的是“**最重要的原因**”。 --- ### **选项分析：** - **A. Because the United States is huge.** 这是文章中提到的第一个原因，说明美国地大，因此需要汽车来出行。但“地大”只是背景，**不是根本原因**。 - **B. Because public transportation is not so good.** 这个原因**文章中没有提到**，所以不能选。 - **C. Because Americans like to be independent.** 文章中**没有提到“独立”这个文化因素**，所以也不是正确答案。 - **D. Because Americans like to move around.** 文章中明确提到“**many Americans like to move around**”，这说明美国人有出行需求，而汽车正好满足了这个需求，因此这是**最重要的原因**。 --- ### **结论：** 文章中明确指出美国人喜欢到处走动，这是汽车流行的一个核心原因，也是题干问的“最重要的原因”。 --- ### **最终答案：** $$ \boxed{D} $$