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【单选题】
Circle the best topic sentence for each of the following paragraphs. 1. For instance, last summer I found myself waiting in long lines seven times in one day! It all started when I decided to treat my wife and kids to a Cleveland Indians baseball game. To start off, we needed gasoline. As I waited eight cars back from the pump, I alternately drummed my fingers and checked my watch. My stomach knotted as I realized that instead of arriving comfortably early, I'd be lucky to get a decent parking space at Cleveland Stadium. After a twenty-minute wait at the parking area as hundreds of cars inched along, we parked, hiked to Gate A and were confronted by about eight hundred anticipants, filing ever so slowly through the metal barriers. Once inside, we had to fight the crowds at the souvenir stand. Although you couldn't call what I was in a line, I had to wait eight minutes to spend $ 20, get three bruises, and very possibly a broken toe.
A.
I'd bet that if scientifically analyzed, waiting in line would prove to be a major contribution to stress in human beings.
B.
The experience of waiting in line last summer exhausted me.
C.
When waiting in line, all we have to do is stand there and move a little, and just stand there some more.
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参考答案:
举一反三
【多选题】单片机应用系统是由 [填空(1)] 和 [填空(2)] 组成的。
A.
硬件系统
B.
软件系统
【简答题】(1) 单片机应用系统是由 和 组成的。
【多选题】蛋白质的胶凝与蛋白质的( )有关
A.
缔合
B.
聚集
C.
凝结
D.
胶凝
【多选题】什么叫蛋白质的胶凝作用?它的化学本质是什么?如何提高蛋白质的胶凝性
A.
蛋白质的胶凝作用是指变性的蛋白质分子聚集并形成有序的蛋白质网络结构的过程。
B.
蛋白质的胶凝作用的本质是蛋白质的变性。
C.
大多数情况下,热处理是蛋白质凝胶必不可少的条件,但随后需要冷却,略微酸化有助于凝胶的形成
D.
添加盐类,特别是钙离子可以提高凝胶速率和凝胶的强度
【简答题】什么叫蛋白质的胶凝作用?它的化学本质是什么?如何提高蛋白质的胶凝性?
【简答题】单片机应用系统是由[填空(1)]和[填空(2)]组成的。
【简答题】什么是钢的热处理?热处理工艺是由哪三个阶段组成的?
【简答题】(1) 什么是单片机?它由哪几个部分组成?什么是单片机应用系统?
【简答题】远程教学有许多好处,但也存在许多的不足之处:如硬件、软件还有待完善。远程教育对技术的要求十分苛刻,如硬件质量、软件维护一旦出现问题,网上授课就也会出现问题;远程教学中“人机交流”存在着局限性。通过网络,教师传递主要的教学内容给学生,但如肢体语言,语气、动作等细微的信息却难以传递,使师生之间的交流不能尽善尽美,有时甚至影响教学效果。所以网上学习相对于传统学习仍有不足的地方,网上学习的缺点在于教师与学...
【简答题】根据凝胶条件分,蛋白质凝胶主要有哪几种主要类型?主要胶凝条件与机理是什么?胶凝与蛋白质变性有何关系?
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