This is a cheap and simple process(過程), ____ ,there are dangers.
A．butB．soC．becauseD．However
D

試題分析：句意：這是一個廉價簡便的過程。但是有危險。結(jié)合語境可知，前后兩個句子在語氣上有轉(zhuǎn)折關(guān)系。根據(jù)選項，but和however均表示轉(zhuǎn)折關(guān)系，但用法稍有不同。即however與前后兩分句有逗號隔開，獨立使用，而but直接連接后一分句。故選D。
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