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<sec id="sec45">
 <title>The Answers</title>
 <p>Students should use the answers below to check
  their understanding.</p>
 <answer-set>

  <answer pointer-to-question="q1">
   <p>B</p>
  </answer>

  <answer pointer-to-question="q2" id="ans2">
   <p>false</p>
   <explanation pointer-to-explained="ans2">
    <p>Soviet cosmonaut Georgy Beregovoy was born three months
     and three days earlier than United States astronaut John Glenn, whose birth date
     is July 18, 1921.</p>
   </explanation>
  </answer>

  <answer pointer-to-question="q3">
   <answer-set>
    <answer pointer-to-question="q3a" id="ans3a">
     <p>1</p>
    </answer>

    <answer pointer-to-question="q3b" id="ans3b">
     <p>3</p>
    </answer>

    <answer pointer-to-question="q3c" id="ans3c">
     <p>2</p>
    </answer>

    <explanation pointer-to-explained="ans3a ans3b ans3c">
     <p>Glenn resigned from NASA on January 16, 1964. He won election to the United States Senate
      in 1974. On October 29, 1998, he became the oldest person to fly in space.</p>
    </explanation>
   </answer-set>
  </answer>

  <answer pointer-to-question="q4">
   <p>This selection is a biographical sketch of John Glenn's career.  The
    sketch focuses upon his achievements at NASA, notably his becoming the
    first American to orbit the Earth in 1962.  The biography also discusses
    his retirement from the Marine Corps and subsequent election to the United
    States Senate, where he continued his interest in space flight.  The bio
    concludes with his participating at age 77 in a Space Shuttle mission.</p>
  </answer>

 </answer-set>
</sec>
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