完形填空。 （共12分，每小题1分）
阅读短文，掌握其大意，然后从短文后各题所给的四个选项中选择最佳选项，将其代号填在答题卡相应的题号后。
Doctors and other scientists study the human mind and now they have proved that stress can have an influence on the health of your body.
Stress is    36    whenever there is a problem or change in your life. Of course, everybody has stress more or less and nobody’s life is    37   . In fact, stress is necessary. Without    38   , we would never learn anything or grow or change. We would    39    be bored to death. But too much stress can    40    you.
Today you have different kinds of stress. Problems like endless homework or troubles with your family are the kinds of things you can’t fight against    41    run away from.
42    can you do about stress? First, you can try to find ways to change things so you aren’t under so much stress. You can    43  a plan to finish homework, go to a doctor or try to work things out with your family or friends. But sometimes you can’t    44   a stressful situation. Sometimes you don’t even want to.
The link between your body and brain    45   in two ways. Your body can help your mind deal with stress. If you are    46    stress, you need to take especially good care of your body. It’s important to get enough sleep and have nutritious meals. Another thing that you can do is daily    47   . Anyone with a continuing physical problem should check with a doctor before starting any exercise programs.

A．produced B．caused C．suggested D．influenced

A．wonderful B．sad C．perfect D．helpful

A．change B．life C．problem D．stress

A．always B．probably C．maybe D．never

A．hurt B．beat C．injure D．influence

A．or B．and C．with D．so

A．When B．Why C．What D．How

A．start B．look up C．set up D．go on

A．make B．change C．have D．think

A．meets B．rests C．sleeps D．works

A．in B．under C．between D．on

A．exercise B．work C．life D．practice