【正确答案】 B

【答案解析】[解析] 86-88
This is a public service announcement.
Many homes and apartments are without electricity after the severe snowstorm that hit the region last night. If you are without electricity, DO NOT burn charcoal or use gasoline generators indoors to heat your home. Never use gas ovens to heat your home and do not use kerosene and gas heaters in closed rooms. These devices can produce dangerous carbon monoxide gas. For more information about how to stay warm and safe during the winter power outage, please stay tuned for an interview with Public Health official, Janet Sharpe at 10:00. Thank you for your attention.

这则公告的对象是住在homes and departments(住宅和公寓)里的人们，即当地居民(B)。公告目的是为了防止人员伤亡。该公告不是针对急救人员(A)或煤气销售人员(C)。公告中提到了Public Health offical(公共健康官员)，但是说她将接受采访，该公告不是向公共健康官员发布(D)。

【正确答案】 A

【答案解析】该公告建议人们安全地进行室内取暖(A)。公告强调：“DO NOT burn charcoal...to heat your home．(不要通过燃烧木炭进行室内取暖。)…Never use gas ovens to heat your home...(不要使用燃气灶进行室内取暖。)”，所以选项(C)使用炉灶取暖和选项(D)在室内燃烧木炭都不正确。公告没有建议人们离开自己的家(B)。

【正确答案】 B

【答案解析】公告的开头说“Many homes and apartments are without electricity after the severe snowstorm...(那场严重的暴雪之，很多住宅和公寓都停电了。)”，所以这个问题的原因是暴雪(B)，而不是雷电雨(A)、大风(C)或暴雨(D)。