下列选项中( )不是分子状态污染物。
A．二氧化硫(SO2)
B．氮氧化物(NOx)
C．一氧化碳(C
D．氨(NH3)
参考答案：D
According to the lastest study ,the population of Xuzhou has grown to more than 30 times____it was in 1949. The figure ____to 9.5 million by the end of 2010.
A．that , will rise
B．that ,will have risen
C．what , will rise
D．what ,will have risen
某种烃与H2 1∶1加成后的产物如图所示：则该烯烃的结构式可能有
