问题描述：
这个句子的两个地方需要打逗号吗?
Taken as a whold,the reading article presented background infomation and advantages of wind power () whereas in contrast () the listening offered the advantages and disadvantages.
请问各位大哥,括号这里要打逗号吗?
Taken as a whold,the reading article presented background infomation and advantages of wind power () whereas in contrast () the listening offered the advantages and disadvantages.
请问各位大哥,括号这里要打逗号吗?
问题解答：
我来补答展开全文阅读