单选题 At first I thought that math problem would be rather difficult, but it ______ to be fairly easy.
【正确答案】 A
【答案解析】本题考查动词搭配。turn out常与to，that连用结果是…；turn up“将(音量等)调高，出现”；turn on“打开(电器等)”；turn over“翻身”。句意为：最初我想数学题可能会很难，结果却很简单。