用二氧化硅和金属氧化物的形式表示硅酸盐的组成,不正确的是 ( ) A .钙沸石 [Ca(Al 2 Si 3 O 10 ·3H 2 O)] CaO·Al 2 O 3 ·3SiO 2 ·3H 2 O B .镁橄榄石 (Mg 2 SiO 4 ) 2MgO·SiO 2 C .长石 (KAlSi 3 O 8 ) K 2 O·Al 2 O 3 ·3SiO 2 D .高岭石 [Al 2 Si 2 O 5 (OH) 4 ] Al 2 O 3 ·2SiO 2 ·2H 2 O
【简答题】用be动词(am /is /are)填空(10分) 小题1:I a girl. 小题2: you a student? 小题3: he your brother? 小题4: She my aunt. 小题5:It a red pen. 小题6: Wang Fang a good student. 小题7:These my grandparents. 小题8:Gina and Mary my sis...