【单选题】A quick review of successes and failures at the end of year will help _________your year ahead.
【简答题】5X-3.8X=74.7.5X-3.8X=74.
【简答题】Please follow the video and immitate the conversation.
【简答题】Ivy filled her life with meaning by launching a program to help poor children. [Y] [N] [NG]
【单选题】电缆用阿拉伯数字表示外护层构成,有 ____( )_____ 个数字。