单项选择题
Since Japan （） importance to education and technological innovation, its economy has developed at a high speed.
A．relates B．applies C．attaches D．connects
单项选择题 The Great Wall is a great tourist （）, drawing millions of visitors from all parts of the world every year.
单项选择题 It is still not clear what （） a series of argument between them.
单项选择题 Humans should not develop their economy at the （） of the ecological envi ronment.
