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- 1已知实数a,b,c,满足a+b+c=0,a^2+b^2+c^2=6,则a的最大值为______.
- 2there is someone in the room 改否定句
- 3During the week,schools ask the students ____ to school on foot or by bike,not by car or by bus.
- 4一个圆锥形买对,底面周长是31.4m,5m,每立方米小麦约重750千克,这对小麦约重多少千克
- 58^x=1/2 8的x次方等于0.5 x=?
- 6某烃的一种同分异构体只能生成一种一氯代物，该烃的分子式可以是（ ） A.C3H8 B.C4H10 C.C5H12 D.C6H14
- 7What is she?She is a teacher.英语是这么说吗
- 8充分 环游 3Q
- 9C_________make people laugh.
- 10小明和爸爸、妈妈一家三口打算在假期参加当地旅行社组织的