45.
(A) how can their inventions help
(B) their inventions can help how
(C) can how help their inventions
(D) how their inventions can help

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統計： A(59), B(12), C(7), D(241), E(0) #1631900

詳解 (共 2 筆)

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Brewer said, technol...
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#3720464
（d）他們的發明如何幫助，
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