25、This is an amazing area of study ______ new discoveries are being made almost every day.

A．from which                                      B．by which       

C．in which                                          D．through which

 

 

25、C

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This is an amazing area of study ______ new discoveries are being made almost every day.

A．from which                                      B．by which       

C．in which                                          D．through which

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