第13题: [单项选择]细胞兴奋时膜电位的负值减小称为() A. 极化 B. 去极化 C. 反极化 D. 超极化 E. 复极化 参考答案:B 答案解析:细胞兴奋时,膜电位从0mV到+30mV,即膜电位变为内正外负,称为反极化;膜内电位从静息电位的-90mV到+30mV,其中,从-90mV上升到0mV,称为去极化;膜内电位从+30mV逐渐下降至静息电位
第16题: [简答题]下周一班里要召开大型主题班会,老师让每人准备一份发言稿。请你以My Future Plan为题写一篇100词左右的发言稿。提纲如下: 1.我决定大学毕业后当一名教师,这是我孩提时代的梦想; 2.我很喜欢教师这个职业,与学生在一起可以使自己永葆青春; 3.我国师资力量缺乏,主要原因是教师工作辛苦,收入低,想当教师的人很少。但是我要献身教育事业(the cause of education)。 参考答案:
My Future Plan
We are all thinking about our future plan. Do you know what is mine I have already decided to become a teacher after my graduation.
When I was a child, I had this dream. I think it can make me young and happy to be with students. It is well-known that teachers are badly needed in our country, but few people want to become teachers. The main reason for this is that teachers’ work is hard but they are paid too little. In spite of that, I still want to be a teacher. I will devote all my life to the cause of education.
答案解析:
写作指导
发言稿的内容包括提供或传递信息。这类文章一般分三步写:招呼听众,简略介绍所要讲的问题;陈述基本情况,这是主要内容,要有理有据,详尽得当;最后作结束语,可提出倡议,也可表
第18题: [单项选择]A. South American Indians. B. The Spanish. C. English people. D. Londoner. 参考答案:B 答案解析:[听力原文] Who introduced the original chocolate drink to the rest of the world during the 1500s
第33题: [多项选择]地方各级人大主要以召开会议的方式进行工作。会议每年至少举行一次,经下列选项中的哪一法定数额代表的提议可以临时召集本级人大会议?( ) A. 1/5以上 B. 1/3以上 C. 2/3以上 D. 1/10以上 参考答案:A 答案解析:[解析] 我国《地方各级人民代表大会和地方各级人民政府组织法》第11条规定:地方各级人民代表大会会议每年至少举行一次。经过1/5以上代表提议,可以临时召集本级人民代表大会会议。因此,A项为正确答案。