三男一女共行四人同行.从中任意取两个.性别不同的概率是（）A.1/4 B.1/3 C.1/2 D.3/4

　　六种.
　　第一种：一男一女
　　第二种：一男二女
　　第三种：二男一女
　　第四种：二男二女
　　第五种：三男一女
　　第六种：三男二女
　　写成算式是：2×3=6种
　　我是八年级的~

第一层：三男全被征.第二层：家中情况.第三层：老妇自请服役.

有几种工作可选?
是五种吗?男女都可以担任吗?
C（5,3）×C（4,2）×A（5,5）
=10×6×120
=7200（种）
祝你开心

既然是初二水平,那你可以编一个自然发音的小话剧,如：
A:Today we learn some phonics.Phonics is the best way in which you can learn English.You are my children.We parents have to choose the best way in which you can learn well.
B:Today,we learn the sound of "c" and "h" together.They sound like "ch".Dick,say it with me.
C-h,ch,ch.
C:C-h,ch,ch.
B:T-c-h,tch,tch.
D:T-c-h,tch,tch.
A:Okay,let's try the ending digraph of "ch".First,we learn the word family of "each".Mary,say it with me.Ea-ch,each.Each,each,each.
D:Ea-ch,each.Each,each,each.
A:P-each,peach.Peach,peach,peach.
D:P-each,peach.Peach,peach,peach.
A:Sit on the bench and finish the peach.
D:Sit on the bench and finish the peach.
A:Okay,let's learn the word family of "atch".A-tch,atch.Atch,atch,atch.
D:A-tch,atch.Atch,atch,atch.
A:The patch does not match.
D:The patch does not match.
A:Oh,I have lots of fun chanting with you.
C&D:Me,too.

时间：暮投石壕村.
兵役带来的巨大痛苦：妇啼一何苦
家境异常艰难：有孙母未去,出入无完裙!
老妇人确实被抓走：天明登前途,独与老翁别!

3男2女,则算3+2=5人一组,有39除以5=7..4也就是说过了5组还剩下4人,第四人是女的钱,3男2女,前三人是男的,第四人就是女的!

Characters:(In the order of appearance)
Jerry as Michael (M)
Li as Alex (A)
Mark as Chris (C)
Vincent as Waiter (W)
The three emotions we express in this play:victorious,disgusted and confused
SCENE 1
(In the Railway Station)
M:Alex,Chris!You are back!
A&C:Michael!Oh,thank you for picking us here.We're so glad to see you!
M:Me too.Congratulations to your victory in the national final competition!It must be an exciting moment when you heard that you get the golden medals,isn't it?
A:Yes.I just can't believe that we defeated all other competitors!Right,Chris?
C:Yes,it was really amazing.You know,just in one second,you became the winner,and you became the elite.It happened so sudden that I wondered whether I was dreaming.
M:Well,you guys will soon find that you're not dreaming.Now you're the idols of all the students in the university!I think you can attend the American Idol now!
A:Oh,please,I don't want to be idol…
C:(Interrupt):Yes,because you're not an American idol,you're just "Alex idiot".
A:Hey,Chris!(All of them laugh)
M:Ok,guys,it's getting late.You must be hungry after 23-hours trip.What about going to have dinner first?
C:That sounds great to me.What about you,Alex?
A:I'm starving.Let's go.
SCENE 2
(In the restaurant)
A:We've sit here for five minutes,and no waiter comes!
M:Come on,Alex,have patience.Maybe they're just too busy to serve us.
C:Really?I don't think they're busy.Look at those two waiters,they're laughing,but not working!Hey!You!Come here!(A second) Please bring us the menus.
W:OK,sir.Here you are,sir.
A:You see,we have three people here.Can you bring two more menus for us?
W:Sorry,sir.We don't have extra menus.
C:Oh,you don't?Then what's that?(Point to the other table) Don't tell me that's not menu.
W:It is,sir.But it belongs to that table.M:But we can't see anyone having dinner there.
W:Yes,but…
C:Don't say any "but" to me.Now,you bring the menus to us,or we bring the complaints to your boss.
W:OK,here you are,sir.
(They order the food)
SCENE 3
(30 minutes later)
A:I'm starving!Where's our food?Waiter!
W:Yes,sir?
M:We give the order 30 minutes ago,but nothing is served still.Can you ask the kitchen to cook faster?
W:Oh,they cook fast,very fast.But your food is not easy to cook,it needs more time.You should be patience.
C:We should be patience?Yes,we are patience,we are patience enough to wait for the mother pig giving birth to the baby pig,we are patience enough to wait for the baby pig growing up,and we are patience enough to wait for the grown pig being killed and becoming my pork steak!Now,give you five minutes.If we can't see our food in five minutes,we will give our patience to another better-served restaurant!
W:OK,sir.Please wait a second.
SCENE 4
(The food is being served)
M:I ordered the Cappuccino,but what's this?Coca Cola?
W:Exactly,it's Pepsi Cola.
M:I don't care what kind of cola it is,what I want is coffee,not cola!
W:Well,sir,they share the same color.And I think cola tastes better…
C:Great,and rabbit and rat share the same letters.So why don't you give me a rat if I order the rabbit?Jesus!Ridiculous!
A:I can't stand this stupid restaurant and this idiotic waiter any more.Chris,Michael,let's go.
C&M:Right,let's go.
SCENE 5
(Outside the restaurant)
A:I can't believe that is a restaurant.I'd rather say that it's a psychiatric hospital!
M:Yes,that's terrible!How can it survive in the market economics?
C:The important thing is how can it survive in Guangzhou?This city is going to hold the Asian Game in 2010.If there're some more restaurants like this,what will the foreign people think about Guangzhou and China?
A,C&M:(Sigh)