第4题: [单项选择]下列哪种行为扰乱市场秩序情节严重,构成非法经营罪( ) A. 在生产、销售商品活动中以假充真、以次充好,以不合格产品冒充合格产品的 B. 未经许可经营国家专营、专卖物品的 C. 仿造发票,严重扰乱市场秩序的 D. 倒卖文物,严重扰乱文物管理秩序的 参考答案:B 答案解析:根据《刑法》第225条的规定,扰乱市场秩序,情节严重,构成非法经营罪的行为包括:(1)未经许可经营法律、行政法规规定的专营、专卖物品或者其他限制买卖的物品的;(2)买卖进出口许可证、进出口原产地证明以
第17题: [单项选择]关于突触传递可塑性的叙述,哪项不正确 A. 强直后增强是因为前膜内Ca2+积累的结果 B. 习惯化是因为前膜Ca2+通道失活,Ca2+内流减少 C. 敏感化是因为cAMP增多至前膜Ca2+内流增多 D. 长时程增强是因为突触前神经元胞质内Ca2+增多 参考答案:D 答案解析:[考点] 突触传递的可塑性 [解析] 突触传递的可塑性是指突触传递的功能可发生较长时程的增强或减弱,包括强直后增强、习惯化和敏感化、长时程增强和长时程抑制。长时程增强是因为突触后(不是突触前
第19题: [单项选择]Foxes were introduced into Tasmania probably because ______. A. scale people took them there by chance B. some people took them there for money C. some people wanted to have a fox race D. some people intended to hunt new animals 参考答案:D 答案解析:文章第二段提到“... after foxes were introduced, perhaps deliberately by individuals who wanted new game.”狐狸