单选题：inbadwinters,about70percentofthebutterfliescanstayalive

题目内容：

inbadwinters,about70percentofthebutterfliescanstayalive A．Right
B．Wrong
C．Notmentioned

参考答案：

答案解析：

The curious looks from the strangers around her made her fee

The curious looks from the strangers around her made her feel uneasyA．different

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The change in that village was miraculous.A．conservative B．amazing C．insignifica

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切断兔双侧迷走神经后，呼吸的改变是（）A．呼吸幅度减小 B．吸气相延长 C．呼吸频率加快 D．血液CO2张力暂时升高

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维持胸内负压的必要条件是（）A．吸气肌收缩 B．胸膜腔密闭 C．呼气肌收缩 D．肺内压低于大气压

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去甲肾上腺素可以使（）A．窦房结自律性增高 B．房室传导加速 C．心肌收缩力加强 D．以上都对

分类：理工类题型：单选题