优优班--学霸训练营 > 知识点挑题
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            • 1． You'd better take a map with you _____you won't lost．（　　）
              A．as long as
              B．as if
              C．so that
              D．now that
              难度：难
              解析 收藏 试题篮
            • 2． Daming hasn't done much exercise______ he got his computer．（　　）
              A．when
              B．if
              C．though
              D．since
              难度：难
              解析 收藏 试题篮
            • 3． We have been expecting Rio 2016 Olympics_______ the Olympic flame（圣火） was lit．（　　）
              A．if
              B．unless
              C．since
              D．though
              难度：难
              解析 收藏 试题篮
            • 4． My sister has learnt English______．（　　）
              A．for twelve years ago
              B．since she was four
              C．twelve years ago
              D．at the age of four
              难度：难
              解析 收藏 试题篮
            • 5． David has learned a lot about Chinese culture_____he came to China.（　　）
              A．when
              B．until
              C．before
              D．since
              难度：难
              解析 收藏 试题篮
            • 6． If your head still _________， please go to the doctor．（　　）
              A．hurt
              B．to hurt
              C．hurts
              D．hurting
              难度：难
              解析 收藏 试题篮
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