Question

【題目】Don’t turn off the computer before closing all the programs, _____ you’ll have problems.

A. but B. and C. so D. or

Answer 1

【答案】D

【解析】

試題分析：考查連詞。A. but 但是；B. and并且；C. so 因此；D. or 否則；句意：在關(guān)閉所有程序之前不要關(guān)電腦否則會(huì)出現(xiàn)問(wèn)題。考查祈使句+or/and+ 陳述句，根據(jù)句意選or;