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  3. Although the phenomenon of withdrawal has always been the crucial physiological

Although the phenomenon of withdrawal has always been the crucial physiological

游客2025-02-25  30
问题 Although the phenomenon of withdrawal has always been the crucial physiological Leng for distinguishing addictive from non-addictive drugs. It has become increasingly evident that not all-regular heroin users experience withdrawal symptoms.
选项 A、addictive from
B、addictive and
C、addictive or
D、between addictive or
E、among addictive or
答案 A
解析 考查distinguish的用法，答案为A。在这里需说明的是：addictive和non addictive是共用一个drugs，而上例的选项C中：no writing or underlining是writing与underlining共用一个“no”。
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