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在2020年陕西中考的任务型阅读中，作者通过列举我们在马路上如何去处理一个空瓶子的例子，来说明了如何去判断一个人是否长大了。

文章通篇用的一般现在时。这点我完全理解。

但在下面题目中，出题人用了一般过去时，来提问作者如何支撑他的主要观点。

75. How did the writer support the main idea in the passage?

The writer used ________________ as an example to support the idea.

我查看了六七个其他省市的中考题，类似的题目往往用的一般现在时来提问，即How does the writer support...

我现在有两个疑惑：

1，这个题目本身到底应该用一般过去时did来问好呢，还是应该用一般现在时does来问好呢？

2，如果就是原题的这种问法，如果我给出答案The writer used ( how we deal with waste bottles on the road) as an example to support the idea. 从语法的角度，这个宾语从句放在这里没有问题吧，另外，主句用了一般过去时，宾语从句用了一般现在时，在这里应该怎么去解释呢？

下文是中考的文章原文，如果有需要供参考！非常感谢！

Let's say you are taking a walk along the road and you happen to see one or two waste bottles lying on the grass beside the road. What would you do?

You may have different choices. Firstly, you can leave the bottles there as they are. It was not you who threw them away. Why should you do something about it? This is quite OK. Secondly, you can pick them up and throw them into a dustbin (垃圾箱). By doing this, you have walked a step further to help make our home clean. This action is a better choice. Thirdly, you might want to pick them up and give them to an old man or woman who collects waste for a living. If this is your choice, you have walked even further. You're not only thinking about doing something for the environment, you're also developing yourself to be a person who would think of others and help them.

As for young kids, they may always have such a question: “When do I grow up?” Yes! When does a child grow up? And how can a kid know he or she has grown up? These are interesting questions. As for us, fifteen-year-olds, who are finishing middle school, we're no longer younger children. We should know whether or not we have grown up. When we start to have a sense of offering a helping hand for a cleaner city and greener world, and when we have a loving heart to think more of others than of ourselves and are ready to help them, we can say that we have grown up.

Remember：If we help others, others will help us. If we do our best for nature, nature will offer its best to us in return!