写出下列词语的近义词。

敏捷---____         后裔---____

繁衍---____          笨重—--____

    This is Joy's bedroom.it's a small room . He has some pictures.They are on the wall. He also has a desk and a chair in his bedroom.The desk is near the window. His bag and pencil box are on the desk. There are some pencils,a pen,a ruler in the pencil box. He has a baseball and a basketball. They are under the bed.Joy likes playing basketball and baseball. He also has two volleyb alls,but he doesn’t like playing volleyball.
根据短文内容，从A、B、C、D四个选项中选出能填入空白处的最佳选项。

如图所示电路，电源电压保持不变，闭合开关，滑动变阻器滑片向左移动，电流表的示数将(    )

垂直于同一条直线的两直线平行．____ ．（填“对'或'错”）