[单项选择]Running water has been a very important source of power for thousands of years．
A. 自来水是力量的重要来源，它已有几千年的历史了。
B. 流水作为动力的重要来源已有好几千年了。
C. 几千年来流水是动力的重要来源。
D. 运动的水作为动力的主要源泉已有几千年了。

更多"Running water has been a very impor"的相关试题:

[单项选择]It has been very cold lately, but it is beginning to get a bit wanner.
A. 近来天气一直很冷，但现在正开始变暖和一些。
B. 它一直都很冷酷，直到现在才开始热情起来。
C. 近来天气一直都是零下温度，但现在温度开始回升。
D. 近来天气一直都是零下温度，但现在正开始变暖和一些。

查看答案

[单项选择]It has been very cold lately but it is beginning to get a bit warmer.
A. 近来天气一直很冷，但现在正开始变暖和一些。
B. 它一直都很冷酷，直到现在才开始热情起来。
C. 近来天气一直都是零下温度，但现在温度开始回升。
D. 近来天气一直都是零下温度，但现在正开始变暖和一些。

查看答案

[单项选择]You'd better ______the water until it has been boiled.
A. not drunk
B. not drinking
C. not to drink
D. not drink

查看答案

[单项选择]You'd better ______ the water until it has been boiled.
A. not to drink
B. not drink
C. not drunk
D. not drinking

查看答案

[单项选择]You''d better _______ the water until it has been boiled.
A. not to drink
B. not drink
C. not drunk
D. not drinking

查看答案

[单项选择]You'd better _______ the water until it has been boiled.
A. not to drink
B. not drink
C. not drunk
D. not drinking

查看答案

[单项选择]Progress so far has been very good. ______ , we are sure that the project will he completed on time.
A. However
B. Otherwise
C. Therefore
D. Besides

查看答案

[单项选择]Which of the following records has been a source of information in the author's investigation
A. United States Immigration Service reports from 1914 to 1930.
B. Payrolls of southern manufacturing firms between 1910 and 1930.
C. The Volume of cotton exports between 1898 and 1910.
D. The federal census of 1910.

查看答案

我来回答:

提交