题目

Do we need an “Ivy League”? China may soon have its own “Ivy League”, with a union of top universities. The term originally referred to an athletic conference of eight top universities in the northeastern US. The Chinese version, which was officially started in mid-October, consists of nine famous universities, including Peking, Tsinghua, Zhejiang and Fudan. The union is supposed to result in student exchange programs, recognition of academic achievements, and other joint programs. The news of this Chinese “Ivy League” has received mixed responses from the public and press. Some ne如下图所示的四幅图中，没有产生声音的是（   ）