____,it is easy to drill a hole in it with laser.

问题描述:

____,it is easy to drill a hole in it with laser.
A.Hard as is the diamond B.Hard is as the diamond
C.Hard as the diamond is D.As the diamond is hard

选择C.
开头句是as引导的让步状语从句.意为“虽然、尽管” as所引导的从句要用倒装语序,前面放形容词、副词或名词.
As the diamond is hard.因为倒装,hard 提前,其他不变.