我觉得不能绝对的说。需要结合语境 一般来说，连接两个并列的主句，需要加逗号 比如： sentence A，and sentence B
但是在GWD 17-Q18中的正确选项 Over the course ofthe eighteenth century, the average output of ironwork tripled as a result ofseveral improvements in blowing machineryand because coal replaced charcoal asthe fuel used in the smelting of iron ore. 没有加逗号，有具体的原因，可以参考我的一篇回贴(第12篇回复)。 也希望您多提意见。
那我想问一下这道题的B选项，如果把and前面的逗号去掉可不可以，
By recording the noise of crinkled wrappers as they were slowly stretched out in an otherwise silent
chamber, and then digitizing and analyzing the sound emissions on computers, a team of scientists
found the noise not continuous but consisted of individual bursts or pops just thousandths of a
second long.
(A) digitizing and analyzing the sound emissions on computers, a team of scientists found the noise
not
(B) digitizing and analyzing the sound emissions on computers, a team of scientists found that the
noise was not
(C) digitizing and analyzing the sound emissions on computers, a team of scientists found the noise
not to be
(D) the sound emissions were digitized and analyzed on computers, a team of scientists found that
the noise was not
(E) the sound emissions were digitized and analyzed on computers, a team of scientists found the
noise not to be
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2011-10-29 18:37:57
收藏
收藏
楼主
