分析 文章講述了很多年來科學(xué)家們一直都在探索外太空以尋求生命跡象.
解答 28-31 AACC
28 A 計(jì)算題.根據(jù)第三段第一行Of the 200 billion stars in the Milky Way galaxy (銀河星系),scientists find that five percent are like our sun.Perhaps half of them have a planet like earth.200乘以0.05等于10,10的一半剛好的5.
29 A 段落大意題.第一段是關(guān)于人類如何尋找其他星球的生命跡象的各種方式.故選A.
30 C 猜測(cè)詞義題.根據(jù)上下文可知是用電腦跟蹤監(jiān)視.故選C.
31 C 推理題.根據(jù)文章第一,二段可知科學(xué)家用了多種方法去其他星球的生命跡象.故選C.
點(diǎn)評(píng) 學(xué)生需要認(rèn)真閱讀原文,把握文章大意,對(duì)文章脈絡(luò)有整體的了解,能仔細(xì)查找文中細(xì)節(jié),并能根據(jù)文章內(nèi)容進(jìn)行合理的推測(cè)判斷.
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