看了不后悔2011年考研英语一真题及答案Section I Use of EnglishDirections:Ancient Greek philosopher Aristotle viewed laughter as “a bodily exercise precious to health.” But _some claims to the contrary, laughing probably has little influence on physical filness Laughter does _short-term changes in the function of the heart and its blood vessels, _ heart rate and oxygen consumption But because hard laughter is difficult to _, a good laugh is unlikely to have _ benefits the way, say, wal