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【简答题】
阅读短文,根据其内容简要回答问题。 1. When the Beijing Olympics begin this August, the world will be watching. The games have become a huge international event. People will come from around the world to watch 10,500 athletes from 205 countries and districts compete (竞争) to take home the gold. 2. The first recorded Olympics, in 776 B.C., were an important religious (宗教的) festival. Olympic sports have changed a lot in the last few thousand years. The ancient games began with just one 192-meter race. In later years, the games grew to include a total of six sports. Most of the ancient Olympic sports tested skills soldiers needed. 3. Even the modern Olympics were once far smaller than they are today. The first of the modern games, in 1896, only had 241 athletes from 14 countries. Moreover (此外), the early modern Olympics were not an independent (独立的) event. Until l 908 the Olympics were part of the world's fair! 4. At the first modern Olympics, there were 43 events from ten sports. Many of the sports from the early modern games are no longer part of the Olympics, such as golf and tug of war (拔河). There has always been a lot of disagreement over changing Olympic sports. 5. The number of Olympic sports has constantly increased throughout history. At the Beijing games, athletes will compete in 302 events from 28 sports. Despite (尽管) all the changes over the years, some ancient sports are still part of the modern games. These include running,boxing and wrestling. 1. How many countries and districts will take part in the Beijing Olympics? ________________________________________________________________________ 2. What did the ancient Olympics begin with? ________________________________________________________________________ 3. What do Paragraph 3 and 4 mainly tell us about? ________________________________________________________________________ 4. At least how many gold medals will the athletes compete for in the coming Olympics? ________________________________________________________________________ 5. What ancient sports are still parts of the modern games? ________________________________________________________________________
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【单选题】构成总体的每个单位所有方面的特征是 ( )
A.
必须完全相同
B.
不完全相同但至少有一个方面相同
C.
完全不相同
D.
既可以相同,也可以不相同
【单选题】下列 合金钢中,不属于合金结构钢的是 ( )。
A.
2 0CrMnTi
B.
4 0Cr
C.
5 5Si2Mn
D.
1Cr18Ni9
【单选题】下列属于合金结构钢的是() Ⅰ.合金渗碳钢;Ⅱ.合金弹簧钢;Ⅲ.滚动轴承钢;Ⅳ.高速钢;Ⅴ.量具钢;Ⅵ.不锈钢;Ⅶ.耐热钢。
A.
Ⅰ+Ⅱ+Ⅲ
B.
Ⅰ+Ⅲ+Ⅵ
C.
Ⅰ+Ⅱ+Ⅲ+Ⅵ
D.
Ⅰ+Ⅱ
【单选题】构成总体的每个单位所有方面的特征( ).
A.
必须完全相同
B.
不完全相同但至少有一个方面相同
C.
完全不相同
D.
即可以相同,也可以不相同
【单选题】构成总体的每个单位所有方面的特征是
A.
必须完全相同
B.
不完全相同但至少有一个方面相同
C.
完全相同
D.
既可以相同,也可以不同
【单选题】下列属于合金结构钢的是( ) I.合金渗碳钢;II.合金弹簧钢;III.滚动轴承钢;IV.高速钢;V.量具钢;VI.不锈钢;VII.耐热钢。
A.
Ⅰ+Ⅱ+Ⅲ
B.
Ⅰ+Ⅲ+Ⅵ
C.
Ⅰ+Ⅱ+Ⅲ+Ⅵ
D.
Ⅰ+Ⅱ
【判断题】晶体结构中的堆积密度越大越稳定。
A.
正确
B.
错误
【简答题】下列不属于普通低合金结构钢具有的特点的是( )。
【单选题】下列钢号中不属于合金结构钢的是( )。
A.
20Mn
B.
Q460
C.
20Mn2
D.
40Cr
【单选题】构成总体的每个单位所有方面的特征( )
A.
必须完全相同
B.
不完全相同但至少有一个方面相同
C.
完全不相同
D.
既可以相同,也可以不相同
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