第6题: [单项选择]特异性投射系统的主要功能是下列哪项() A. 维持和改变大脑皮层的兴奋状态 B. 引起特定感觉并激发大脑皮层发出神经冲动 C. 维持醒觉 D. 协调肌紧张 E. 调节内脏功能 参考答案:B 答案解析:特异性投射系统:丘脑特异性感觉接替核及其投射到大脑皮层的神经通路。投射到大脑皮层的特定区域,具有点与点的对应关系。上行纤维进入大脑皮层第四层,形成丝球结构主要同第四层内神经元形成突触联系,诱发其兴奋。
第8题: [单项选择]The crazy fans ______ patiently for two hours, and they would wait till the movie star arrived. A. were waiting B. had been waiting C. have waited D. would wait 参考答案:B 答案解析:[考点] 过去完成进行时的用法 [解析] 过去完成进行时表示持续到过去某时的动作。
第35题: [单项选择]______ the foreign tourists lose their ways, the guide prepares the small cards with the address and name of the hotel. A. In case of B. In case C. In any case D. In that case 参考答案:B 答案解析:in case of介词词组,意为“以防,以备”;in case引导从句,意为“以防,以备”; in any case意为“无论如何”;in that case意为“如果那样”