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            • 1.
              \(-1 \dfrac {1}{2}\)的倒数是 ______ .
            • 2.
              \(-5\)的倒数是\((\)  \()\)
              A.\(- \dfrac {1}{5}\)
              B.\( \dfrac {1}{5}\)
              C.\(-5\)
              D.\(5\)
            • 3.
              \(-3\)的倒数是\((\)  \()\)
              A.\(- \dfrac {1}{3}\)
              B.\( \dfrac {1}{3}\)
              C.\(±3\)
              D.\(3\)
            • 4.
              \(-2018\)的倒数是\((\)  \()\)
              A.\(2018\)
              B.\(- \dfrac {1}{2018}\)
              C.\( \dfrac {1}{2018}\)
              D.\(-2018\)
            • 5.
              \(-2017\)的倒数是\((\)  \()\)
              A.\(2017\)
              B.\(-2017\)
              C.\( \dfrac {1}{2017}\)
              D.\(- \dfrac {1}{2017}\)
            • 6.

              \(-4\)的倒数是(    )

              A. \(- \dfrac{1}{4} \)          

              B. \( \dfrac{1}{4} \)            

              C.\(4\)            

              D.\(-4\)
            • 7.
              \(-2\)的倒数是\((\)  \()\)
              A.\(2\)
              B.\( \dfrac {1}{2}\)
              C.\(- \dfrac {1}{2}\)
              D.\(-2\)
            • 8.
              \(- \dfrac {1}{2}\)的倒数是\((\)  \()\)
              A.\(-2\)
              B.\(2\)
              C.\( \dfrac {1}{2}\)
              D.\(- \dfrac {1}{2}\)
            • 9.
              如果\(a\)与\(-3\)互为倒数,那么\(a\)是\((\)  \()\)
              A.\(-3\)
              B.\(- \dfrac {1}{3}\)
              C.\(3\)
              D.\( \dfrac {1}{3}\)
            • 10.
              \(- \dfrac {3}{5}\)的倒数是\((\)  \()\)
              A.\( \dfrac {3}{5}\)
              B.\( \dfrac {5}{3}\)
              C.\(- \dfrac {3}{5}\)
              D.\(- \dfrac {5}{3}\)
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