题目

根据短文内容, 从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 At times, our worries and anxieties can defeat us. Here is a brief list of techniques that you can use to help gain a better viewpoint on things during the anxious moments. A person should take a deep breath and try to find something to do for a few minutes to get their mind off the problem. A person could get some fresh air, listen to some music, or do an activity that will give them a fresh perspective on things. Remember that our fearful thoughts are made to seem worse判断磁体的磁极或磁感线的方向，可利用已知磁极的小磁针。如图所示，根据小磁针静止的指向（小磁针被涂黑端为N极），标出U形磁体的N、S磁极和磁感线的方向。