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- 1:已知三角形ABC中,角ABC的角平分线与角ACB的外角平分线交于点D,DE平行BC交AC于点F.求证:BE-CF=EF.
- 2热情是人生的太阳,指引我们前进的道路
- 3I go to school at half past eight and lessons start at nine o'clock.疑问句是什么?
- 4它深信,乌云是遮不住太阳的,----是的,遮不住的!
- 5已知有理数x,y满足二分之一|x-y|=-|y-二分之一|,求3x-7的值
- 6Where ___your keys?,Tom?A is B are C__
- 7If you love somebody, let them go. If they return, they were always yours. If they don't, they neve
- 8把重5N、体积为0.6dm3的物体投入水中,若不计水的阻力,当物体静止时,下列说法正确的是( ) A.物体上浮,F浮=6N B.物体悬浮,F浮=5N C.物体漂浮,F浮=5N D.物体沉在水底,F浮=6N
- 9倍数放大镜,看到的图象会怎样,看到的范围会怎样
- 10what are you going to do for your mother is birthday?my mother is birthday is coming .l am going