烟消云散指什么动物

1.设集合M={x/-1 已知集合M={x|-3 Some people are waiting-------the bus------bus stop（填介词） ( )Do you knock who they are waiting _ the bus stop?A.for at B.for C.at D.for on( )_it is to help the old men clean the house!A.what a fun B.how great fun C.how great a fun D.what fun( )Milly _ her tortoise because it moves _.A.like;slow B.love;slowl _____(not open) the windows. It’s too cold todey. I have to keep the windows _____(open).It is too cold. I remember ____(open)the windows,but they are still closed.用所给词的适当形式填空.说明理由. Oh,dear,The windows are still open.She forgot ______ them.A to close B closed 选择.为什么. all the windows are _closed_.they are not open 为什么用open ,不用opened 《我的爸爸》英语作文70词的,不要有错别词啊! 《我的爸爸》英语作文70词的,不要有错别字啊!火速! 明天晚上我得去参加表弟的上日聚会.用英语怎么说? Tina is waiting for the bus stop为什么不是Tina is waiting for the bus She is waiting at a bus stop.She is wait for a bus stop.用at对还是用for对?请说明原因 Look.Your classmates are waiting at the bus at the bus stop.改错 Look!Tony is waiting （ ）the bus stop.Look!Tony is waiting （ ）the bus stop.A、for B、of C、to 1.Look!Mr White is waiting( )the bus stop.a1.Look!Mr White is waiting( )the bus stop.a.for b.at c.to9.The boys are( )a film at the cinema now.a.seeing b.looking at c.watching10.There are( )days in February in 2012.a.thirty b.twenty-eight c.twenty-nin 求满足条件｛x|x^2+1=o}为M的真子集,M为｛x|x^2-1=0}的子集,求集合M的个数最好能写出分别是什么, It was rianing heavily.Little Mary felt cold,so she stood___to her mother. it was raining heavily.little marry felt cold.so she stood______to her mother.为什么选Close而不...it was raining heavily.little marry felt cold.so she stood______to her mother.为什么选Close而不选Closely It was rainning heavily.Little Mary felt cold,so she stood______to her mother.(close).为什么啊 It was raining heavily.Little Mary felt cold,so she stood close to her mother.这里close是形容词么?为什么在动词后面不用副词啊? 集合M={x丨x2-3x-a2+2=0,a属于R}的子集个数 设U=R,集合A={x|x^2+3x+2=0},B={x|x^2+(x+1)x+m=0};若B是A的子集,求m但是难以自拔因此非常苦恼写内容包括：1.中学生谈恋爱的危害（浪费时间、金钱,成绩下降；违反校规） 2.解决问题的办法（多把精力 已知集合A={x|x^2-3x+2=0},B={x|x^2-(m+1)x+m=0} , 且B为A的子集,求m的值组成的集合C is,always,cold,too,it,winter,in连词成句 连词成句 in,cold,is,China,winter,in,it(.) _______________连词成句in,cold,is,China,winter,in,it(.) ____________________________fifth,of,week,the,day,the,is,Tuesday(.)_________________________April,favourite,your,is,month(?)____________________ 连词成句：cold,is,in,very,it,Jilin,winter,in ____________________________________. what is he -------(do)now?he------(wait) for a bus at the bus stop 集合M={m|10/(m+1)属于z,m属于z}的子集个数 集合M={x|x∈Z且 12 10-x ∈N},则M的非空真子集的个数是如题,我只是想知道为什么得出9.8.7.6.4.-2之后用2六次方减2来算出62 9(x-1)