武昌到黄鹤楼怎么走:初中奥林匹克简单的]几何题高手回答

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在三角形ABC中,D是BC的中点,G是AD上一动点(不包括A、D),BC、CG的延长线分别交AC、AB于E、F,求(S三角形BGF+S三角形CGE)/S三角形ABC的最大值

请先画图,要过程!
BC、CG的延长线分别交AC、AB
改为:
BG、CG的延长线分别交AC、AB

5月18日 18:42 好啊,英语的要不要啊,化学的是奥赛的.我也类似这样问要一些题啊,可是都没有人答我啊.
好吧,我来回答.
It's so waum here. WHy not_______your coat?
1take away 2put on 3put down 4take off
________does your fanther go to see a film?
1How long 2How often 3How soon 4How far
How long have you _______a cold?
For about three days.
1had 2got 3caught 4taken
From now on we won't be able to go out as much as we_____-
1must 2had 3used to 4will
SARS teaches people to be thankful,not only for their own lives,but also for________
1another's 2other's 3the other 4some other
Can I eay in the library?
=Is_____ _____in the library?
答案为:eating allowed
Is it all right if you take care of my fish?
=Do you _____ _______care of my fish?
答案为:mind taking
I think you should give up smoking now.
=I think you _____ _____give up smoking right away.
答案为:had better
Ther are a lot of people on this island.
=This island_____a large_____.
It's ten years since the Littles started to work in China.
=The littles_____in China for over ten years.
答案为:have worked
是了,你该不会是小学生吧.如果你还想要的话,再问我拿.我觉得啊,这样也没多大用处啦,不如你去找一下一些试题,一份份,比较完备.

先保存再说,马上没网络了,明天来答.