In 1995 Richard Stallman, a well-known critic of the patent system, testified in Patent Office hearings that, to test the system, a colleague of his had managed to win a patent for one of Kirchhoff's laws, an observation about electric current first made in 1845, it is now included in virtually every textbook of elementary physics.
语法 Sentence Correction-15744
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正确的用户笔记
greentea 2015-10-15 10:18:18
, it is incorrect, should add a conj. It is not clear.
前程万里两不相干 2015-07-14 04:09:23
it is de出现使从句出现了2套主谓，因为没有连词。that 宾语从句的主谓事 a colleague had managed to win
lovehideto 2016-07-22 06:02:06
it is多余。
AdamJ 2016-10-04 10:23:47
run-on 无连接词
踏实聪明狗 2016-09-11 14:36:15
it is 前没有连词连接句子
跳跳爸爸 2016-08-11 20:45:58
it is 多余
跳跳爸爸 2016-08-11 20:45:56
it is 多余
跳跳爸爸 2016-08-11 20:45:53
it is 多余
snow199511 2016-06-05 20:37:40
Run-on sentence: it is now included
LM檬先森。 2016-06-01 20:05:12
D选项：it is now included……这句话和前句没有连词
ztg591 2016-05-21 18:37:41
it is .. creating 'run-on' sentense
克村 2016-04-17 02:27:00
it is 是个run on, 两个独立的句子需要连词来连接。
