写关于笔筒的事物说明文400字

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• 若AB互为倒数则a^2010除以(-1/b)^2009 等于几?

  1年前

• Can you help me with dancing?这话里dance为什么要用ing形式?不是情态动词can后面用

  1年前

• Under the help of my teacher,I have caught up with my classm

  1年前

• 解关于X,Y的方程组 {x+y=a （a-1)x+y=5

  1年前

• 当2x-y/x+y=3时,求代数式2x-y/2x+2y+x+y/6x-3y的值.

  1年前

精彩回答

• Danny wanted to hit the ball, _______ he hit his hand. ( )

  7个月前

• I ________ good food with my family last night. ( )

  7个月前

• —What about having a picnic tomorrow morning?

  1年前

• My life, as it really is, is always filled with sadness and little joy.

  1年前

• 近视眼只能看清楚______的物体，看不清楚______的物体，这是因为近视眼的成像成在了视网膜之______，应给他配______透镜矫正视力．

  1年前