一氧化碳燃烧火焰颜色

The students usually have volleyball for two hours.(对划线部分提问)( ) ( ) ( ) the students usually have volleyball? 教师节是Teacher's Day还是Teachers' day原因 求29,30题啊急! our car is a much older ()than yours. ()应该填model还是pattern I can play ( ) volleyball.(填冠词)我感觉这道题是不是出错了... can you play volleyball____A good B well C nice D fine Thanks for ____me to your party ____ Sunday morning.A.inviting ,in B.inviting,on C.invite,inD.invite,on 酒店“标准间”是双人间还是单人间 酒店标准间,双人间,单人间区别 计算：2sin平方60°乘以tan45°+cos30°乘以tan30° 第十三题答案 答案快第十三题 第十三题请问答案 Bill and Jill can play teenis and volleyball.对划线部分提问 We play volleyball for two hours.（对划线部分提问）划线部分是two hours The boy can play volleyball very（ ）.A.goodThe boy can play volleyball very（ ）.A.good B.well C.fast Maybe it is our house one day 翻译 we have a big __.it is __our house. 已知|a-4|+根号b+3=0,求a的平方+b的平方的平方根 为什么Thanks for inviting me.为什么这里的invite要加ing 3/4X-5%X=5.8 求X Thanks for inviting me to your house on Friday.同义句改写 Thanks for —— me to ... 急湘教版的 已知a,b为实数,且a+2的平方根+|3的平方根-b|=0 七年级下单检元检测答案 look at sign you_____park your bike hereA.many notB.don notC.need notD.must not You have no right _____your bike here.填写put的各种形式 “世界上各种各样的事物、现象是物质的不同表现形式”这个观点教师讲是只有辩证唯物主义才承认的观点,但我觉得就是唯物主义的观点也是承认的啊? x-4x+1=0求答案!求步骤! the mother asked the naughty boy if he was sorry for what he had done改为直接引语 我们的世界是真实的吗? 我们的世界是真实地存在吗