题目

Everyone worries. But how do you deal with your worries? Whether your worries are big or small, you can take these three steps to deal with your worries：1 Try to find out what you're worried aboutSometimes, you know what you're worried about. Other times, you might not. Try to find it out first; if you can't, you can ask for help.2 Think of ways to make it betterThere is always something you can do to help you feel less worried. Sitting there worrying is no fun and it won't solve your problem.Grades at school are often a top worry for kids. If you' re worried about grades, ask yourself these为了探究压力的作用效果与哪些因素有关，小勇同学在同一块海绵上做了如下图所示的实验来进行研究。(所用每块砖重力和型号大小都相同) A．一块砖平放在海绵上   B．两块砖叠放在海绵上   C.一块砖竖放在海绵上(1)小勇是通过观察           来比较压力作用效果的。 (2)观察比较图A、B的情况可知，压力的作用效果与        有关；比较图A、C的情况可知，压力的作用效果与                 有关。 (3)以上这种研究方法在科学探究中属于             法。