氮氧化合物是氮的氧化物的总称。通常所指NO和NO2两种成分的混合物,是大气中常见的重要污染物,其主要污染源为()。
A. 空气中的氮和氧在常温下的化合
B. 燃料燃烧时,空气中的氧和氮在高温下生成的产物
C. 机动车辆排放的废气
D. 氮肥的生产过程
查看答案
禁止在()内砍柴、放牧
A. 经济林
B. 防护林
C. 特殊用途林和幼林地
D. 薪炭林
听力原文:W: I was late for school four times this month.
M: I was twice that often and Tom was seven times.
How many times was the man late this month?
A. Four times.
B. Seven times.
C. Eight times.
建设经过已有的()的高速公路和城市高架、轻轨道路,有可能造成环境噪声污染的,应当设置声屏障或者采取其他有效的控制环境噪声污染的措施。
A. 建筑物
B. 建筑物集中区域
C. 噪声敏感建筑物
D. 噪声敏感建筑物集中区域
听力原文: A court in Zimbabwe is due to deliver its verdict today in a trial of a journalist who works for the British newspaper the Guardian. It's seen as a test case for the country strict new media laws. Andrew Meldrum, an American who's lived in Zimbabwe for over twenty years, is accused of publishing an untrue story and faces up to two years in prison if found guilty. A dozen other journalists have also been charged with offenses related to the new laws. In the court Mr. Meldrum's defence argued that his story was published in Britain. It was beyond the jurisdiction of Zimbabwean law.
What is the journalist accused of?
A. Working for the British newspaper.
B. Objecting to the new media laws.
C. Violating the Zimbabwean laws.
D. Publishing an untrue story.