想一想,算一算.1.There are some girls and some dogs in a house.There are 22 heads and 72 feet.How mamy girls and dogs are there in the room?2.If you want to boil one egg,it will cost you five minutes and thirty seconds(秒).In that way,how much

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想一想,算一算.1.There are some girls and some dogs in a house.There are 22 heads and 72 feet.How mamy girls and dogs are there in the room?2.If you want to boil one egg,it will cost you five minutes and thirty seconds(秒).In that way,how much
想一想,算一算.
1.There are some girls and some dogs in a house.There are 22 heads and 72 feet.How mamy girls and dogs are there in the room?
2.If you want to boil one egg,it will cost you five minutes and thirty seconds(秒).In that way,how much time do you need to boil five eggs?
顺便给个答案,要英文的.

想一想,算一算.1.There are some girls and some dogs in a house.There are 22 heads and 72 feet.How mamy girls and dogs are there in the room?2.If you want to boil one egg,it will cost you five minutes and thirty seconds(秒).In that way,how much
1.一座房子里有几个女孩,几条狗.他们一共有22个头,72条腿.问房子里有多少女孩,多少条狗?(鸡兔同笼问题,自己算吧)
2.如果煮一个鸡蛋要5分30秒,煮5个鸡蛋要多少时间?(是不是脑筋急转弯?同时煮,仍然是5分30秒?)

第一题
房子里有几个女孩和几条狗,总共有22个脑袋,72只脚,问房子里有多少个女孩,多少条狗?
设有x女孩y条狗
x+y=22
2*x+4*y=72
解二元一次方程组
x=8, y=14
房子里有8个女孩,14条狗.

第二题:

如果你要煮一个鸡蛋,它需要5分30秒,按这种方法计算,煮5个鸡蛋需要多长时间...

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第一题
房子里有几个女孩和几条狗,总共有22个脑袋,72只脚,问房子里有多少个女孩,多少条狗?
设有x女孩y条狗
x+y=22
2*x+4*y=72
解二元一次方程组
x=8, y=14
房子里有8个女孩,14条狗.

第二题:

如果你要煮一个鸡蛋,它需要5分30秒,按这种方法计算,煮5个鸡蛋需要多长时间
还是需要5分30秒. 煮一个鸡蛋和煮5个鸡蛋的时间一样.

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想一想,算一算.1.There are some girls and some dogs in a house.There are 22 heads and 72 feet.How mamy girls and dogs are there in the room?2.If you want to boil one egg,it will cost you five minutes and thirty seconds(秒).In that way,how much 想一想算一算 There are There are there are 1.How many people are there in Mrs Green's home?A.There are too B.There are threeC.There are fourA.There are too B.There are three C.There are four这些回答中选一项 are there 还是there are 想一想,算一算,画一画 想一想, 想一想, 想一想,根据要求改句子.1.My parrot is yellow and red.(对划线部分提问)__________________2.I can'tjump high.(改成肯定句)3.Mr.Brown is a policeman.(用what提问)4.Its ears are long.(用whose提问)5.There are six sketch boo 1.There are about two t______ trees. 英语仿写题e.g.Where there is a (will),there is a (way).1.Where there is( ),there is ( ).2.Where there are( ),there are ( ). 挑战初中英语趣味题想一想,答一答1.What's in the middle in China?2.How many letters are there in English?3.Who can stop a car with one hand only 4.What kind of hand cannot hold anything?5.What kind of man cannot live inside the house 想一想,指出并改正下列句子中的错误1.I have lot of rulers.2.Jane don't check the brakes of his bike yestreday.3.It is good for people learn Chineae.4.Bicycles are cheap than cars.5.Who can jumps high?6.There is some helmets on the desk. 想一想,算一算,那一题. there are=there're There are some ---(German)there.