There is an ambiguity in the sentence “ He is a hard businessman ” due to ______.
A. polysemy
B. homonymy
C. synonymy
D. antonymy
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下列四种比例尺地形图，比例尺最大的是（）
A. 5000
B. 2000
C. 1000
D. 500
______ of meaning is a process by which a word that originally had a specialized meaning has now become generalized.
A. Degradation
B. Elevation
C. Extension
D. Specilization
帕金森病的特征性症状是（）
A. 头痛
B. 呕吐
C. 意识丧失
D. 静止性震颤
E. 姿势步态异常
肝性脑病患者禁用的维生素是（）
A. 维生素 A
B. 维生素 E C
C. 维生素 C
D. 维生素 B 1
E. 维生素 B 6
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