问题 判断题

旧电池不能使收音机正常工作的原因是电池内阻很大。

答案

参考答案:

写作题

请认真读图,看看爸爸、妈妈分别在做什么。用现在进行时写句子,不少于3句。

                                                          

                                                                                                                                                                

                                                                                                                                                                

                                                                                                                                                                

                                                                                                                                                                

                                                                                                                                                                

                                                                                                                                                                

填空题