上浮的物体和下沉的物体在水中都受到____的作用，我们可以感受到浮力的存在，可以用____测出浮力的大小。

（一）半命题作文：________伴我成长

要求：将题目补充完整，写一篇不少于600字的文章，不要出现真实的人名、校名、地名。

（二）历练对人生是何等的重要。有的人身心承受住了“凤凰涅槃”般的历练，他便走向了成功；有的人无法承受，便败下阵来；而更多的人，承受住了一时的历练，也获得了一点成功，但此后便躺到了舒服的安乐窝里一劳永逸，就此沉沦下去。生命的高度是由历练打造的，只有历练不止，我们生命的殿堂才能永远金碧辉煌！

要求：请根据以上材料或叙写经历、见闻，或谈谈自己的感悟，自拟题目，文体不限（诗歌除外），写一篇不少于600字的文章，不要出现真实的人名、校名、地名。

根据短文理解，选择正确答案。

HOLIDAY FUN AT THE POWERHOUSE

500 HARRIS STREET ULTIMO·TELEPHONE

( 02 ) 9217 0111

    Join in the holiday fun at the Powerhouse this month linked to our new exhibition, Evolution & Revolution: Chinese dress 1700s to now. DON'T FORGET our other special event, the Club Med Circus School which is part of the Circus(马戏团)！150 years  of circus in Australia exhibition experience!

◆Chinese Folk Dancing: Colourful Chinese dance and musical performances by The Chinese Folk Dancing School of Sydney. Dances include: the Golden stick dance and the Chinese drum dance. A feature will be the Qin Dynasty Emperor's court dance. Also included is a show of face painting for Beijing opera performances.

    Sunday 29 June and Wednesday 2 July in the Turbine Hall, at 11：30 am & 1：30 pm.

◆Australian Chinese Children's Arts Theatre: Well­known children's play experts from Shanghai lead this dynamic youth group. Performances include Chinese fairy tales and plays.

    Thursday 3 to Sunday 6 July in the Turbine Hall, at 11：30 am & 1：30 pm.

◆Chinese Youth League: A traditional performing arts group featuring performance highlights such as Red scarf and Spring flower dances, and a musician playing Er Hu.

    Sunday 6 to Tuesday 8 July in the Turbine Hall, 11：30 am to 1：30 pm.

◆Kids Activity: Make a Paper Horse: Young children make a paper horse cut­out. (The horse is a frequent theme in Chinese painting, indicating a kind of advancement.) Suitable for ages 8～12 years.

    Saturday 28 June to Tuesday 8 July in the Turbine Hall, 12：00 pm to 1：00 pm.

◆Club Med Circus School: Learn circus skills, including the trapeze, trampolining and magic. Note only for children over 5. There are 40 places available in each 1 hour session and these must be booked at the front desk, level 4, on the day.

Tuesday 1 to Saturday 5 July at 11：30 am & 1：00 pm.

    Enjoy unlimited free visits and many other benefits by becoming a family member of the Powerhouse. Our family memberships cover two adults and all children under the age of 16 years at the one address.

    Members receive Powerline, our monthly magazine, discounts in the shops and the restaurants, as well as free admission to the Museum. All this for as little as $50.00 a year! Call (02)9217 0600 for more details.

    A new study of 8,000 young people in the Journal of Health and Social Behavior shows that although love can make adults live healthily and happily, it is a bad thing for young people. Puppy love(早恋)may bring stress for young people and can lead to depression. The study shows that girls become more depressed than boys, and younger girls are the worst of all.

    The possible reason for the connection between love and higher risk of depression for girls is “loss of self”. According to the study，even though boys would say “lose themselves in a romantic relationship”, this “loss of self” is much more likely to lead to depression when it happens to girls. Young girls who have romantic relationships usually like hiding their feelings and opinions. They won't tell that to their parents.

    Dr Marianm Kaufman，an expert on young people problems, says 15% to 20% young people will have depression during their growing. Trying romance often causes the depression. She advises kids not to jump into romance too early. During growing up, it is important for young people to build b friendships and a b sense of self. She also suggests the parents should encourage their kids to keep close to their friends, attend more interesting school activities and spend enough time with family.

    Parents should watch for signs of depression—eating or mood changes—and if they see signs from their daughters or sons, they need to give help. The good news is that the connection between romance and depression seems to become weak with age. Love will always make us feel young, but only maturity(成熟)gives us a chance to avoid its bad side effects.