GRE作文入门和进阶技巧

145.A new study collected data that shows that people who snore are more likely to gain weight than are people who do not snore. It is well known that many people who snore also stop breathing frequently during the night for a few seconds， a condition called sleep apnea. The interruption of breathing wakes the person-often so briefly that the waking goes unnoticedand can leave the person too tired during the day to exercise. Anyone who snores， therefore， should try to eat less than the average person and to exercise more.

（病历文）

In this argument， the arguer make a proposal that anyone who snores should try to eat less than the average person and to exercise more. In order to prove his claims， a new study collected data has been quoted that people who snore are more likely to gain weight than are people who do not snore. in addition， the arguer also shows a common sense to support the conclusion， which says that sleep apnea， a condition caused by snore， can wakes the sleeping person often and leave him too tired to exercise during the day.

The explanation of the conclusion sounds quite plausible at the first glance， but after pondering deeply upon the matter， we may find that the arguer fails to build up a causal relationship between the sentific study and the the conclusion as presented above， furthermore， this argument also suffers from critical logical confusion， How can the person who is too tired to exercise join even more aerobic activities during the day？ To reveal the flaws of the argument more clearly， let us detail the examination.