【单选题】is a sequence of letters and digits, the first character must be a letter.
【单选题】● (75) is a sequence of letters and digits,the first character mustbe a letter. (75)
【单选题】听力能力是在相关知识背景帮助下,在语境中理解 __________ 的能力。
【判断题】The first character of a string has index 1.
【单选题】An identifier is a sequence of letters and digits,the first character must be(60).
【判断题】Is the first character appeared in the film automatically the “main character”?( )
【简答题】What problem did the first character in the video have?