这道题原文说类木行星有很厚的大气层,然而类地行星有meager的大气层,根据反向逻辑,类地行星的大气层肯定是与厚相反的,所以应该是很薄的大气层,所以这道题目选B。在反向逻辑中要注意以下的标志词:
表示让步:Even / Although / Despite
表示转折:But / Yet / However
表示对比:Whereas / While / In contrast / On the other hand
6. 词根词缀
The undisputed pre-Columbian presence in Oceania of the sweet potato, which is a New World domesticate, has sometimes been used to support Heyerdahl’s “American Indians in the Pacific” theories.
The word undisputed in the passage is closest in meaning to
A. mysterious
B. unexpected
C. acknowledged
D. significant
这个题目中undisputed, un是一个表示否定的前缀,dispute大多数同学认识,这个单词是指争辩,那么根据前缀un就知道undisputed指不能争辩,或者无可争辩,所以选项里面应该选C, 大家都承认的,都接受的。
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