问题 单项选择题

弧电压是由( )来决定。

A.电弧

B.电弧长

C.电极电位

D.电阻

答案

参考答案:B

写句子

按要求改写句子。   

1.改成感叹句。

    (1)曹冲称象的办法想得奇妙。

                                                                                                                 

    (2)王二小是我们中国人的骄傲。

                                                                                                                 

2.改成“把”字句和“被”字句。

    (1)孩子接过去了妈妈手中的水桶。

                                                                                                                  

                                                                                                                  

    (2)冰雹砸伤了小鸟的翅膀。

                                                                                                                  

                                                                                                                  

单项选择题 A1/A2型题