题目内容：
Which 0f the following can best serve as the title of this passage? __________A．How to Help Students to Sell Their Inventions to Producers?
B．How to Design a Built-in Dervice for Cleaning the Window?
C．Shouldn’t We Know Who Inventd the Windshield Wiper?
D．Shouldn’t We Develop Invention Courses in Universities?
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