数据总线是模块间运行数据的通道，即所谓的“信息高速公路”。
Mary forgot（）a letter to her mother, so she wrote to her just now. ["writing","to write","having wrote","to have writte"]
哪一种颜色网布乱反射最严重？（） ["白","黄","红","黑"]
在确定完成一项任务必须拥有多大权限这一问题上，最好的办法是（）。 ["明确分工","指明授权权限的具体范围","建立反馈、控制机构","鼓励下属参与"]
银行之间的同业拆借期限不得超过（） ["1个月","3个月","4个月","6个月"]
在电力系统正常情况下，工频的频率偏差一般不得超过（）Hz。
