Better wear special clothing, a helmet and a life jacket, just ______ your raft gets upside down or even sinks.
A．in caseB．so thatC．a(chǎn)s though D．in order that
A

試題分析：連詞辨析。A以防；B以至于；C似乎，好像；D為了；句意：最好穿上特殊的衣服，戴好頭盔和救生衣，以防你的木筏翻掉了。根據(jù)句意說明A正確。
點評：本題考查了連詞表示in case以防；so that以至于；as though似乎，好像；in order that為了；要注意as though后面的從句，如果表示的是假的事情，要使用虛擬語氣；如何后面是真的事情，要使用陳述語氣。
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