Last year, I went to a summer camp in the United States with my classmates. It was my first time to go abroad.

    I lived with a host family in Los Angeles for five days. My host family was friendly and gave me lots of advice. For example, they said I should say "excuse me" if I have to interrupt (打断) someone or ask for directions.

    I also took some classes. They were different from the classes I had had back home. In the US, each class is like a seminar. Students join groups, speaking freely and creating a cheerful atmosphere (氛围). I had to work hard to learn more vocabularies, so I could better communicate with my international classmates. I used to pay little attention to my word usage (使用), but now I pay more attention.

    During my visit, I also went to some famous universities in Boston, New York and Washington, D. C. We learned about the history behind the universities. At MIT (麻省理工学院), we saw lots of names on a wall in the hall. The tour guide told us they were the names of students who had lost their lives during wars. I was inspired (鼓舞) by the fact that they fought for their country.

    Li Qiang and Li Gang are brothers. But their living habits(习惯) are different. Now let's go to Li Qiang's room. Li Qiang cleans his bedroom every day and puts his things away. Look! There is a computer on the desk. There are two footballs under the bed. A guitar and a kite are on the wall. Some books are on the shelf. So he must be a careful boy. Now let's go to Li Gang's room. The room is not clean. There are some books on the floor. Can we see his clothes on the desk? Oh, yes. We can also see a football and a knife on the desk. Li Gang never does any cleaning. So his room is  in a mess(混乱).

    What do you think of Li Qiang and Li Gang? I think Li Qiang is a good boy. Li Gang must learn from his brother.

    Many students aren't getting enough sleep at night, which means they end up feeling sleepy during class. {#blank#}1{#/blank#}during the day may be a solution.

    According to Forbes, a mid-afternoon nap can {#blank#}2{#/blank#}, increase your energy and help you study even better. But {#blank#}3{#/blank#}should a nap last? The proper time should be between 10 and 30 minutes, Peter Venn, a sleep expert said.

    Sleeping for {#blank#}4{#/blank#}, such as five minutes or so, is not helpful. That's just not enough time to rest. But if you sleep for too long, you may {#blank#}5{#/blank#}feeling uncomfortable.

On Oct. 23 Chinese swimmer Qin Haiyang got the title of Best Male Swimmer of the Year 2023. Qin won 23 gold medals in the breaststroke （蛙泳）in the big {#blank#}1{#/blank#}（竞赛；竞争）he took part in in 2023. At the world Aquatics Championships in Fukuoka in Japan，he broke five {#blank#}2{#/blank#}（亚洲的）records and became the first swimmer in history to win all three breaststroke golds at a single edition of the event. 

Breaststroke is not easy, it's harder to swim fast because all the strokes {#blank#}3{#/blank#}（发生）under the water. This makes the water push back on the swimmer more and it takes a lot of {#blank#}4{#/blank#}（技能）to swim well. Qin said to Jimu News. "Some people say I'm fast because I save {#blank#}5{#/blank#}（力量，精力）by using fewer strokes. While others might take one and a half strokes, I only need one to swim as far as they do. "