下列交际用语使用得体的一项是( )
A:您嘱咐我给您的大作写一篇书评,恨自己只有八斗之才,恐怕难以胜任,敬请宽恕。
B:兹捡到钱包一只,内有饭卡等物品,请失者与我校后勤组王子健同志联系。
C:布朗先生:兹定于九月二十九日(星期六)三时在纽约天安教堂为爱女伊丽莎白·史密斯与约翰·汉密尔顿先生举行婚礼,届时务必光临。约翰·史密斯夫妇敬邀。
D:大家知道令尊是一位著名的作家,作品广为流传,在文坛小有名气。您是他老人家的犬子,能在百忙中应邀接受采访,我们对此表示感谢。
With the help of the teacher, he decided _______ in class.
A
The Cartoon Museum
Come and see the best of British cartoon art. There is something for everyone—including popular cartoon characters and a great shop full of funny books and cards.
Price: £4.00
Opening time:
Tuesday – Saturday 10:30-17:30
Sunday 12:00-18:00
Cox's Hotel
Tel: 01789 404600
E-mail: info@coxshotel.co.uk
Website: www.coxshotel.co.uk
Coffee shop: 9:00am-6:00pm
Tea room: 10:30am-5:30pm
Pub: 12:00- midnight (1:30am on Friday/Saturday)
Stratford Butterfly(蝴蝶)Farm
Tel: 01789 299288
E-mail: sales@butterflyfarm.co.uk
Visit: www.butterflyfarm.co.uk www.jxyyjx.com
Price: £5.50 adult £4.50 child £16 family
Opening Hours: Summer 10am-6am
Winter 10am-4:30pm
在Rt△ABC中,∠C=90°.
(1)用尺规作图作Rt△ABC的重心P.(保留作图痕迹,不要求写作法和证明);
(2)你认为只要知道Rt△ABC哪一条边的长即可求出它的重心与外心之间的距离?并请你说明理由.