单选题：In my opinion, these suggestions are not useful even ridicul

题目内容：

In my opinion, these suggestions are not useful even ridiculous. A．beautiful
B．practical
C．funny
D．horrible

参考答案：

答案解析：

It can be inferred from Paragraph 2 that before the visa reg

It can be inferred from Paragraph 2 that before the visa regulations were revise

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He checked the luggage thoroughly to make sure that nothing important is left.A．

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请编写一个函数，用来删除字符串中的所有空格。例如，输入asd af aa z67，则输出为asdafaaz67。注意：部分源程序在文件PROGl．C中。请

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