98－8－18

zhx330330

你看题目看错了。原题是the hardest naturally occurring substance,好像语法里面重复了好几次，有的不是选择项

consonant

有个规则，任何情况下：副词不能直接跟名词。产生歧义

do perfectly sth->perfectly do sth

do well sth->do sth well

the hardest naturally substance->the hardest natural substance

here"hardest"and natual" modify "substance" in parallel

godlove168

the hardest naturally substance

很别扭啊　　我也不理解啊　　

consonant你要说服我们才好啊

consonant

correct, I would also use"natural" instead of "naturally

iron

98－8－18

18. Because the diamond is the hardest naturally substance, it is used

        A                                                  B  

in industry for to cut, grinding, and boring other hard materials.

  

                     

C                                               D

c错了 改为CUTING但B也不对呀 副词修饰名词