指出下列句子运用的说明方法: a.当然我们也不能忘掉人的作用。例如,在建筑兰新铁路的时候,一个山头在几分钟内就被炸掉了,这相对地质作用的速度可要快多了。 ( ) b. 根据计算,大约3000~10000年的时间,可以形成一米厚的岩石。( ) c. 岩石在最初生成的时候,像书页一样平卧着,一层层地叠在一起,最早形成的“躺”在最下面。( )
【单选题】听力原文:Attention, please. The Extracurricular Activities Group takes pleasure in announcing that its annual English evening is to be held in the meeting center on Saturday, June 16th, at 7 p. m. The pro...
【单选题】City Plans Summer in Park By Jennifer Lim Staff Reporter The City of Newtonville has announced it will sponsor summer events in City Park starting June 18. Entitled Newtownville Summer Sizzlers, the e...