仔细阅读：
46. B
They hold a different view on stress from the popular one.
47. D
They apply extreme tactics.
48. A
They help him combat stress from work.
49. C
It is something everybody has to live with.
50.C
Its effect varies considerably from person to person.
51. B
Hunting may also be asolution.
52. A
It keeps him pollution under control.
53.A
Over pollution is not an issue.
54.C
Many birds and small animals are being.
55.C
Coordinated efforts of hunter.