Why did the author write the letter?
A. To tell the child to focus on studying and becoming a scientist.
B. To show how excited the father was to see his child go to college.
C. To give advice to the child on how to be sound in mind and body.
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Which of the following topics may be discussed in more detail in the text?
A. Overcoming homesickness when in college
B. College as a very important time
C. How to choose courses in college
D. The importance of good grades
E. How to make friends in college
F. How to be independent
可在C程序中用作用户标识符的一组是()。
A. and_2007
B. datey-m-d
C. hidr.tom
D. casebig1
在C语言中一个int型数据在内存中占4个字节,则unsignedint型数据的取值范围为()。
A. 0~65535
B. 0~2147483647
C. -2147483647~2147483647
D. 0~4294967295
以下标识符不是关键字的是()。
A. break
B. char
C. Switch
D. return
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