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【单选题】
婴儿 6 个月内一般对麻疹、白喉等疾病具有免疫力的原因是A.
胚胎期已受过感染
B.
出生时即接种了相应的疫苗
C.
不易与病原微生物接触
D.
通过自然被动免疫从母体内获得了免疫力
E.
因出生后 3 个月已能合成 IgG
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举一反三
【简答题】g___ vi. 哼,呻吟 n. 呻吟
【判断题】The principle of scarcity
suggests that people are harder to influence when they feel that they are
obtaining a scarce resource.
A.
正确
B.
错误
【判断题】"is as old as technology and civilization" implies that people are trying to escape from the influence of technology the first day technology and civilization came into being
A.
正确
B.
错误
【简答题】呻吟
【简答题】心理问题就是无病呻吟吗?
【判断题】Political forces are aspects of a culture that guide and influence relationships among people.
A.
正确
B.
错误
【简答题】. 阅读理解 ( 核心素养 : 语言能力 )( 建议用时 7' ) Old people are easy to feel lonely because their children are busy with their work and have little time to spend with them.Most of them have to be companied by pet do...
【简答题】痛苦呻吟声
【简答题】呻吟
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