In a pretest loop, the condition being tested is evaluated at the end of the repeating section of code.
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In the condition-controlled loops, the value of the test condition determines the execution of the repetition statements.
A. 对
B. 错
为了标记一个HTML文件,应该使用的HTML标签是()
A.
B.
C.
D.
下列选项中哪种图片格式不是网页中常用的()
A. .jpg
B. .png
C. .tif
D. .gif
网页文件的扩展名为
A. TXT
B. DOC
C. HTML
D. GIF