《大气污染物综合排放标准》设置了()指标体系。
A.2项
B.3项
C.4项
D.5项
参考答案:B
Prices of daily goods_____________through a computer can be lower than store prices. [ ]
A. are bought
B. bought
C. been bought
D. buying
“夫妻双方在实行计划生育中负有共同的责任”,这是依据《中华人民共和国婚姻法》中的有关条款规定的。