My best friend and I……
We both have black eyes and black hair, although my hair is longer than hers. We both like reading and
如图,直线y=-43x+8与x轴、y轴交于A、B两点,∠BAO的平分线所在的直线AM的解析式是( )
要合成带有放射性氧元素(*O)的乙酸乙酯,除必要的反应条件外,下列各组反应物能满足合成要求的是( )
①CH3CO*OH和C2H5OH
②CH3COOH和C2H5*OH
③CH3C*OOH和C2H5OH
④CH3CO*OH和C2H5*OH.
用所给词的适当形式填空____ Why all the _________ (smile) faces? .____ We will take __________(turn) to clean our classroom.____ These stories end with ___________(happy)and laughter .____ ________ (wear) different colors of clothes can affect our feelings.____ I ______________(not,pass) the English exam,so I was so sad.