若∠1与∠2是内错角，∠1=40°，则  （    ）

如图所示是我国的“蛟龙”号潜水器总重约22吨，完全潜入水中后，随着潜水深度的增大，潜水器受到海水的压强将____（选填“增大”、“减小”或“不变”），当它创记录地突破7000米深处并处于悬停时，海水对潜水器的浮力为____ N．

    Easter is a holiday celebrated all over the world. A lot of people like to do 1 things during the Easter weekend. One year my friends Katherine and David decided to 2 on the weekend. They lived in Houston and I lived in San Antonio, about 250km away.

    I was very 3 to go to the wedding. I 4 a new black suit, new black shoes, and a great wedding gift for Katherine and David. After having breakfast in my apartment, I was ready to go and got into my car. I started the car and was 5! The car made a very loud scratchy 6. It didn't start. My car was 7!

    I 8 called my other friends who were going to the wedding. They were all in Houston already. I was so 9. I really wanted to go to the wedding. Then I 10 one more person that might still be in San Antonio. The girl I 11, Emily.

    I called Emily to see if she was still in town and she was! She came to my 12 and we drove to the wedding together. I was a little nervous 13 I liked her very much, but I didn't dare to ask her out. On the way, we had a great14 and we were both really excited for David and Katherine and couldn't 15 to get there.

    The wedding was beautiful. There was so much delicious food at the16, and because it was Easter, the entire wedding was 17 in very bright colors. The best part was that Emily and I danced all night together. I got to know her very well and we decided to go on a 18 when we 19 to San Antonio. My car breaking down was the best thing that 20 to me that Easter weekend!

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Dear SJ,

    Losing a best friend is never easy.

    Your problem, is not just that you miss your best friend, it is that you feel empty and lost without her friendship.

    It takes time to get over a lost, and during that time, your mind is getting used to a new way of being. This is usually a good thing, even if it feels like a bad thing.

    Now that you are on your own, you are being forced to learn to be by yourself and to rely upon your own inner voice for guidance. I am sure that this feels strange for you, but if you can hang on for a bit longer, it may work to your advantage.

    Best friends are cool, but it is important to know the difference between missing someone and being too independent upon them.

    At your age, girls do tend to stick together and having a good boyfriend may not yet be the better choice. Your friend is leaving you, her best friend, for a boyfriend. Boyfriends are completely different from best friends. The distinction is that boyfriends come and go, while girl friends often stay in your life throughout high school, and even afterwards. It is a completely different sort of bond.

    I suggest that you take advantage of this period in your life to expand your horizons. Enjoy the freedom of having no best friend for a while, and hang with the group. By the time your former best friend breaks up with her boyfriend, you will be in a completely different place, a far better place.

    And, by the way, next time you feel empty and lost, try to write about it in a diary. In several months, you will look back and read it with curiosity about yourself. “Who was I then, and what could I have been thinking?”