题干

如图,Rt△ABC中∠C=90°,∠BAC=30°,AB=8,以2 3 为边长的正方形DEFG的一边GD在直线AB上,且点D与点A重合,现将正方形DEFG沿A﹣B的方向以每秒1个单位的速度匀速运动,当点D与点B重合时停止,则在这个运动过程中,正方形DEFG与△ABC的重合部分的面积S与运动时间t之间的函数关系图象大致是(   )

A:

B:   

C:

D:

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A

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HOLIDAY FUN AT THE POWERHOUSE

    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 out other special event , the Club Med Circus School which is part of the Circus ! 150 years of circus in Australia exhibition experience !

◆ Chinese Folk Dancing : Colorful 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 : Well-known 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 the 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 cut-out . ( The horse is a frequent theme in Chinese painting , indicating a kind of advancement . ) Suitable for ages 8-12 years .

Sunday 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 .