SO2和下列哪种污染物共同作用后可大大增加SO的毒性()
A.CO
B.CO2
C.PAH
D.可吸入颗粒物
E.NOx
参考答案:D
In this section, you will hear several passages. Listen to the passages carefully and then answer the questions that follow.
According to the speaker, what makes New Jersey a good place to bicycle
A. Its large number of bicycle clubs.B. Its geographic variety.C. Its network of superhighways.D. Its mild climate.
理性主义