What are the major characteristics of English antonyms
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27岁,G1P0,孕32周,头位,阴道出血3天,量少,无腹痛,胎心正常,无明显宫缩,诊断为前置胎盘。恰当处理是
A. 绝对卧床,给予镇静剂,观察病情变化
B. 立即行人工破膜
C. 立即行催产素(缩宫素)引产,宫口开大后行碎胎术
D. 立即行剖宫产术
E. 立即人工破膜及点滴催产素(缩宫素)
synchronic approach to polysemy
Partial conversion and full conversion are concerned with ______ when converted to nouns.