题目

 I am so glad to receive your email. I know you had made three plans for the holiday, but you only have time to choose two from it. Now I am writing to give you some suggestions.     You plan to taking a course after the exam and you want to find a part-time job. More important, you would like to travel to some places of interest. I think it is a good idea to take a course, although you can learn more knowledge through it. What’s more, I hope you can pay visit to some scenic spots. The reason is because you can broaden your horizon and relax yourself after the tough exam. As for =液体由于受到 的作用，对浸在它里面的物体要产生压强．计算液体压强的公式是 ，从公式可以看出液体的压强只与 和 有关系，跟液体的总重和体积以及容器底面积的大小 ．