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问题 单项选择题

15世纪末，欧洲人开始认识到一种新现象——通货膨胀即价格的普遍上涨。1500年以后，（西欧）价格很快开始迅速上涨。在这个世纪里，整个欧洲大陆的价格平均上涨了4倍。这种现象（）

A.造成社会动荡，损害了国际贸易

B.为世界市场的形成奠定了基础

C.表明西欧成为世界的贸易中心

D.由新航路开辟和殖民扩张引起

答案

参考答案：D

解析：从题目中的时间“1500年以后”可知该现象发生在新航路开辟之后。随着新航路的开辟和殖民扩张，黄金、白银大量流入欧洲，造成物价上涨，引起了“价格革命”。题干材料即是“价格革命”的反映。故选D。A项错误新航路的开辟促进了国际贸易；BC项本身说法正确，但是与材料无关。

听力题

Yesterday, I entered the website “ Topic for today”, I feel ____1____ (interest) in the report on middle school students’ using cellphones on campus. In fact, many students now come to school ____2____ cellphones. My schoolmates have different opinions. Some think ____3___it is convenient to get in touch with others with the cellphone, which also ____4____(let) you feel safe especially in time of trouble. Besides, it is nice to enjoy various functions of different cellphones. ____5____ think differently. First, the cellphone is not a must in school, as ___6_____ are some IC phones in the school _____7___(make) it easy to call others. Second, many students often play e-games and send e-messages with their cellphones, even in class, ___8____ will surely have bad effects on their study. What’s more, it will result in a great waste of time. In my opinion, the cellphone is _____9___ useful tool in our daily life. But it doesn’t mean we can use it ____10____(free) in school.
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单项选择题

检修或搬迁前，必须切断上级电源，检查瓦斯，在其巷道风流中瓦斯浓度低于（）时，再用与电源电压相适应的验电笔检验。

A.0.8%

B.1.0%

C.1.5%
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