Help me translate the following two paragraphs and refuse machine translation; 50 points as a reward.

1. "With the changes of the times, great changes have taken place in our lives. The speed of information update has become faster and life has become more convenient. At the same time, we have to face the inevitable troubles.

What impressed me most was the application of the Internet in our daily life, because its development, especially the development of e-commerce, provided us with a better and faster platform. Therefore, we can buy anything we want without going out. Time and efficiency have been greatly improved. However, it also brings us a lot of trouble. Such as the disclosure of personal information, spam and even all kinds of fraud. All these make me understand that change is a double-edged sword, which means that it can not only bring you convenience, but also bring the following unnecessary inconvenience. "

2. "Dear classmates,

Hello! It's been a long time since we last heard from each other. I don't know how you are. I still remember when we were in middle school, we went to school together and went home together. You are always my role model. You take care of me in many ways and help me learn Chinese and review math. Every time I think about it, it's like yesterday.

Recently, I have been learning English, but I don't know how. You got good grades in English in our class at that time. I hope you can introduce some English learning experience to me, so that I can improve in a short time without wasting my time. "

The public service translation team sincerely answers your questions!