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重庆
A
has
B
is having
C
is to have
D
is used to have
正确答案 ：A
解析
本题考查英语语法——动词的时态。 句意“新技术已经使在线“虚拟图书馆”的发展成为可能。”此处强调对现在造成的结果或影响，也表示事情已经完成，应使用现在完成时。故A项符合题意。 B、C、D项为干扰选项，故排除。 故本题答案为A。
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