光的三原色是（）颜色？
A.红黄蓝
B.红黄绿
C.红绿蓝
参考答案：A
There are dozens of Chinese restaurants in Chicago, but only a few ______ from the others. [ ]
A. stand out
B. try out
C. work out
D. break out
本企业的主要环保设施主要有什么？
