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Ordinary mountain sickness, a common condition among mountain climbers, and one from which most people can recover, is caused by the characteristic shortage of oxygen in the atmosphere at high altitudes. Cerebral edema, a rarer disruption of blood circulation in the brain that quickly becomes life-threatening if not correctly treated from its onset, can also be caused by a shortage of oxygen. Since the symptoms of cerebral edema resemble those of ordinary mountain sickness, cerebral edema is especially dangerous at high altitudes. ??Which one of the following is an assumption on which the argument depends? ? ?(A) The treatment for ordinary mountain sickness differs from the treatment for cerebral edema. ? (E) Most people who suffer from ordinary mountain sickness recover without any special treatment. ??
虽然选对叻是a..但是对于e选项有犹豫,mountain sickness不需要treatment,而Cerebral edema需要treatment,这个假设和a中两种病需要不同的treatment都会导致结论的发生,不知道为什么e选项不正确 |
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