问题 填空题

用稳定的加热设备给一种固体持续均匀地加热一段时间,根据测量结果绘出了如图8所示的温度-时间图像.由图可知该固体是     (选填“晶体”或“非晶体”),该物质在B点时的内能     (选填“大于”、“小于”或“等于”)在 C点时的内能.

答案

晶体;小于

题目分析:(1)读图可知,该物质的熔化图象有一段呈水平,说明有一定的熔点,属于晶体;

(2)虽然在熔化过程中在B点时和在C点时的温度并没有升高,但它一直在吸收热量,因此,该物质C点时的内能大于在B点时的内能.

点评:本题是考查学生从图象中获取信息的能力,而且本题考查的知识是课堂上没有学习过的,所以对学生的能力有较高的要求.

阅读理解

阅读理解。

     If you ask people to name the one person who had the greatest effect on the English language, you will

get answers like "Shakespeare," "Samuel Johnson," and "Webster," but none of these men had any effect at

all compared to a man who didn't even speak English -William the Conqueror.

     Before 1066,in the land we now call Great Britain lived peoples belonging to two major language groups.

In the west-central region lived the Welsh, who spoke a Celtic language,and in the north lived the Scots,

whose language, though not the same as Welsh, was also Celtic.In the rest of the country lived the Saxons,

actually a mixture of Anglos, Saxons,and other Germanic and Nordic people,who spoke what we now call

Anglo-Saxon (or Old English ), a Germanic language. If this state of affairs had lasted, English today would

be close to German.

     But this state of affairs did not last. In 1066 the Normans led by William defeated the Saxons and began

their rule over England.For about a century,French became the official language of England while Old English

became the language of peasants. As a result,English words of politics and the law come from French rather

than German. In some cases,modern English even shows a distinction (区别) between upper-class French

and lower-class Anglo-Saxon in its words.We even have different words for some foods, meat in particular,

depending on whether it is still out in the fields or at home ready to be cooked,which shows the fact that the

Saxon peasants were doing the farming, while the upper-class Normans were doing most of the eating.

     When Americans visit Europe for the first time, they usually find Germany more "foreign" than France

because the German they see on signs and advertisements seems much more different from English than

French does.Few realize that the English language is actually Germanic in its beginning and that the French

influences are all the result of one man's ambition.

1. The two major languages spoken in what is now called Great Britain before 1066 were _____. 

A. Welsh and Scottish

B. Nordic and Germanic

C. Celtic and Old English

D. Anglo-Saxon and Germanic

2. Which of the following groups of words are,by inference,rooted in French?

A. president,lawyer,beef

B. president, bread,water

C. bread,field,sheep

D. folk,field,cow

3. Why does France appear less foreign than Germany to Americans on their first visit to Europe?

A. Most advertisements in France appear in English.

B. They know little of the history of the English language.

C. Many French words are similar to English ones.

D. They know French better than German.

4. What is the subject discussed in the text?

A. The history of Great Britain.

B. The similarity between English and French

C. The rule of England by William the Conqueror.

D. The French influences on the English language.

单项选择题