问题
单项选择题
以下选项中,合法的用户标识符是( )
A.long
B._2Test
C.3Dmax
D.A.dat
答案
参考答案:B
解析: 本题主要考查的知识点为用户标识符。
[要点透析] C语言中,标识符是由字母或下划线开头的字母、数字、下划线组成的字符序列,并且不能是保留字。A项是保留字,C、D项格式不正确,所以答案为B项。
以下选项中,合法的用户标识符是( )
A.long
B._2Test
C.3Dmax
D.A.dat
参考答案:B
解析: 本题主要考查的知识点为用户标识符。
[要点透析] C语言中,标识符是由字母或下划线开头的字母、数字、下划线组成的字符序列,并且不能是保留字。A项是保留字,C、D项格式不正确,所以答案为B项。
选词填空。 | |
2. With the help of the guidebook, you can soon _____ the usage. 3. The continued presence of water _____ to the development of ancient life. 4. After the war _____, they _____ leave their homeland. 5. Don't worry; you will succeed _____ if you keep working hard. 6. I advised them to _____ for the dog. 7. Try and _____ a bit; life isn't that bad! 8. A lion has _____ the zoo. 9. A good hobby _____ a successful business. |