_______, it is quite easy to drill a hole in it with a eraser.
A.Hard a diamond is B.Hard as a diamond is C.As a diamond is hard D.How hard is a diamond正确答案B
_______, it is quite easy to drill a hole in it with a eraser.
A.Hard a diamond is B.Hard as a diamond is C.As a diamond is hard D.How hard is a diamond正确答案B