选择题：( )类型的专业文献出版周期最短、发行量最大、报道最迅速及时，成为多数论文发表渠道。

题目内容：

( )类型的专业文献出版周期最短、发行量最大、报道最迅速及时，成为多数论文发表渠道。

(本题4.0分)
A、期刊
B、报纸
C、会议文献
D、专利

参考答案：

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Tom was wild with joy, because he received a ________ to study at university.A.