某研究性学习小组为测定铜锌合金

英语大神飘过来～1-5题 英语大神飘过来～1.2.3.4.5题咋写啊 英语大神飘过来,1/7 ——How many hours did you ______ reading the novel?——It _____ me two hours to finish reading it.A.take;spent B.spend;took C.spend;cost D.cost;spent——I don't know which T-shirt was ______,so I took them both.——Yes,it 第二题, 第二大题和第三大题, 选择1 Could you please help me ——my dog when i'm away?A,look at b.look like c.look after d.look for2.Here are ——books,you can borrow any book you like.A,all my B,my all C.the all my D,all the my连词成句me to like I have are friends like 救命阿,21,22, 英语大神飞过来～1.4 英语大神飞过来～1.10 英语大神飞过来～ 英语大神飞过来～1.2.3.4.5 英语大神飞过来～12345 跪求英语大神给8～10题答案.和第二大题的1～8题 跪求英语大神给第二大题和第三大题的所有答案,. 求英语大神帮我改十道题11.We are doing muchbetter ______C_____ English ___________ our teachers’ help.A .in; at B.at; in C.in; with D.in;under12.---- In recentyears,more and more Americans like traveling during holidays.---- _____B______. 英语习题大神求教! （ ）Maths _______not hard ,I think.A am B is C are D be( ) My family ______a big family.My family ________all here.A is is B are are C is are D are is ( )Do you know the teacher _____long hair?A has B is C with D have （）1.How are you?a.Yes,it is.（）2.Did you have an ice cream?b.This is my grandma.（）3.Is this your grandpa?c.I'm fine,thank you.（）4.Who's this?d.Yes,she did.（）5.Did she learn English?e.No,I didn't. 7-9题,求求各位英语大神们,学霸们! 9分之2减9分之2成8分之7简便方法 （10.8-2.7）÷（9.2+8.8）简便方法 请帮忙看看这两道题如何用乘法结合律和交换律灵活计算：25×24 25×32×125 (125乘25)乘4的乘法结合律怎么做 判断题：1.25*8.8=1.25*8*1.1应用了乘法结合律,若1.25*8.8=1.25*8+1.25*.8这是应用了乘法分配律进行简算 用乘法结合律计算（要递等式的） 1.26×72+26×25—26×7 2.25×9×4 3.24×305 4.99×12 5.4500×63+455.4500×63+45×3700 25乘以28用乘法结合律怎么算 算式怎么列 在计算2/3*1/4+1/4*1/2时,可以应用什么 律使计算简便. A乘法交换 B乘法结合 C乘法分配 D加法结合 7题8题还有10题 只做7.8题.先回答, 初一数学奥数题要典型的哟~ ~ ~题目出来要有答案！！！ 8,9,11,12