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【单选题】
下列不属于使用抗生素应注意的问题是A.
掌握抗生素的适应证，选用适当药物
B.
要考虑到用量、疗程、给药途径、不良反应、经济价值等问题
C.
常用的抗生素对大多病毒性传染病无效，一般不宜应用
D.
食用动物在屠宰前一定时间不准使用抗生素等药物治疗，因为这些药物在畜产品中的残留会对人类产生危害
E.
在某种情况下为了控制继发感染，在病毒性感染继续加剧的情况下，使用抗生素对病畜是有益而无害的
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举一反三
【判断题】Many Thanksgiving traditions come from that 1621 harvest celebration. ['hɑrvɪst] 丰收;[selɪ'breɪʃ(ə)n] 庆祝
A.
正确
B.
错误
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