The patent officer ______ with my file explained to me that a plant variety is not a/an _______ invention as it is a result of adjusting growth scientifically.
A．dealing; abruptB．dealt; innocent
C．deals; practicalD．dealing; valid
D
考查分詞用法和形容詞辨析。Deal with與officer構(gòu)成主動(dòng)關(guān)系，所以使用現(xiàn)在分詞短語Dealing with my file修飾名詞the patent officer。valid有根據(jù)的;確鑿的;令人信服的；根據(jù)句意可知D正確。
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