威学教育|专注雅思、托福等出国考试培训 网址：www.weixue100.com
【王鑫托福阅读】托福TPO全集之TPO24-2
TPO24
TPO24-2 Breathing During Sleep
1. According to paragraph 1, which of the following can be inferred about the diaphragm during sleep?
A During sleep the diaphragm requires increased movement of the rib cage. B The diaphragm helps with breathing as movements of the rib cage decrease during sleep.
C The diaphragm requires a great amount of pressure to function properly. D The diaphragm contributes to the effective functioning of the rib cage. 2. According to paragraph 2, all of the following are true of the voluntary breathing system EXCEPT:
A It has its control center in the brain stem.
B It controls breathing for a number of activiti during wakefulness. ▲ C It is able to bypass the automatic system. D It produces an irregular breathing pattern. ^ mm
Of all the physiological differences in human sleep compared with wakefulness that have been discovered in the last decade, changes in respiratory control are most dramatic. Not only are there differences in the level of the functioning of respiratory systems, there are even changes in how they function.
威学教育|专注雅思、托福等出国考试培训 网址：www.weixue100.com
Movements of the rib cage for breathing are reduced during sleep, making the contractions of the diaphragm more important. Yet because of the physics of lying down, the stomach applies weight against the diaphragm and makes it more difficult for the diaphragm to do its job. However, there are many other changes that affect respiration 通 1 1\ when asleep.
During wakefulness, breathing is controlled by two interacting systems. The first is an automatic, ,毳.