题干

学习了浮力产生的原因后,小明同学将一质量为150g、体积为180cm3橡胶块,用手将其浸没在水槽的水中(水未溢出),松手后橡胶块将____(选填“上浮”“下沉”或“悬浮”),待其静止后,橡胶块所受的浮力为____ N;与未放入橡胶块时相比,水槽底部受到的压强将____(选填“不变”“增大”或“减小”).(g取10N/kg)
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上浮,1.5,增大

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    Boys and girls, this summer vacation is the time for you to take your mind off homework and prepare yourself for future life. The following is some advice on 1 to make your vacation meaningful and colorful.

   Take exercise. Regular exercise, much health. You 2 hard most of the time so far. Therefore, you need to join in outdoor activities, which can bring your whole body into action. You can benefit from different forms of exercise 3 swimming,jogging and mountain climbing.

   Learn some basic life skills. One day, you will live alone. As a result, you can't 4 your family any longer. In order to deal with your 5 matters in your own life, you should learn cooking, washing and other practical (实用的) skills.

   Go for a journey. Travel to places of interest. In this way, you can find the culture there different from  6  of your hometown. Beautiful scenery can  7 make you relaxed. Imagine that you are lying on the warm beach in bright sunshine, with light seawind gently blowing. Isn't it enjoyable and comfortable?

   Enjoy family time. Home is the place in which you can rest, receive love and care from relations. Don't always sit in front of a computer alone. Instead, the whole family should spend 8 watching a movie on the sofa together. Besides, it's great fun for family members to gather around the table,   9sports, clothes or other common topics (话题).

   If you follow the advice above, you will achieve health, independence (独立),peace of mind and feelings between family members. Today is the beginning of a new life. Your summer vacation must be full of  10 and success. Wish you a wonderful time!