氮肥能使作物枝叶茂盛,叶色浓绿。下列物质中,能用作氮肥的是( )
A:NH4NO3
B:K2PO4
C:Ca(H2PO4)2
D:K2CO3
联系语境,体会划线词的含义。
把下面的图片与所给的描述对号入座。A B C D E____ He is of medium height and build, with two small eyes. He is a pop singer. And he likes playing basketball very much. He is very popular with young people.____ He is short and of medium build. He has short black hair. He is a funny actor.____ She is heavy. She has short brown hair. She always wears glasses. She sings very well.____ He is very tall and has short black hair. He is a basketball player, and he plays it very well. Now he is a college student in Shanghai Jiaotong University.____ She is thin, with long black hair and big eyes. She is a movie star. She is in the play "Palace", and she is very popular with young people.