Tpo24阅读分析(5)

ep

○To argue that REM sleep is more important than NREM sleep

○To illustrate the difficulty of breathing during sleep

○To illustrate how blockage of narrow passages can be prevented during sleep >>>

修辞目的题，先看修辞点所在的句子，但原句整个都是一个例子，往前看。前一句仍然在说肌肉relax的事情，因此也是例子，所以看开头，开头说Air passage在睡觉期间变了很多紧接 着就解释睡觉期间呼吸很难，也就是开头所指的变化是睡觉的时候呼吸变难，所以正确答案是C。A的refute与原文相反；B的比较和D的prevent blockage原文都没说

(2)

paragraph4: But that is not all that changes. During all phases of sleep, several changes in the air passages have been observed. It takes twice as much effort to breathe during sleep because of greater resistance to airflow in the airways and changes in the efficiency of the muscles used for breathing. <A>Some of the muscles that help keep the upper airway open when breathing tend to become more relaxed during sleep, especially during REM (the phase of sleep in which there is rapid eye movement). Without this muscular action, inhaling is like sucking air out of a balloon—the narrow passages tend to collapse. <B>Also there is a regular cycle of change in resistance between the two sides of the nose. If something blocks the "good" side, such as congestion from allergies or a cold, then resistance increases dramatically. <D>Coupled with these factors is the loss of the complex interactions among the muscles that can change the route of airflow from nose to mouth.