What are the Four Create Classical Novels:
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Which novel reached the pinnacle of classical Chinese novels?
Following the in 1898, supporters called for revolutionary poems and novels to arouse people's political awareness.
铰链四杆机构的最短杆与最长杆的长度之和，大于其余两杆的长度之和时，机构（）。
A. 有曲柄存在
B. 不存在曲柄
C. 有时有曲柄，有时没曲柄
D. 以上答案均不对
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