diamond (a)is the hardest known substance(b),so diamond can be cut only by another(d) diamonds 答案为d,可是a 表示diamond是不可数名词阿,可最后diamond 又用了复数,怎么回事?
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哇,leo1111,步我后尘开始用粉色了(我为了这个被大家批了,改用绿色)~
我还是比较喜欢粉色的,要不,趁没别人,变回我的真本色~
赐予我力量吧,我是希曼!~哈哈,天下第一粉色代言人逵逵~
走走台步~~~累了,玩够了,接过逵逵的粉色哦~逢初一十五,我还是会回来的~
(悄悄告诉你,正宗粉色基色:#FF00FF)
oh.....有些明白了,不过偶还是举几个ETS的例子,讨论讨论,看来ETS并没有concern about this examing point.....
98/8:
1 8. Because the diamond is the hardest naturally substance, it is
A B
used in industry for to cut, grinding, and boring other hard materials.
00/8:
26. Diamond is the hardest known substance, so diamonds can be cut only by another
A B C D
diamonds.
97/12 NA:
15. If a diamond is heated without oxygen, it wil turn to graphite.
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