General Conclusion: Now a new study by a team of Purdue University researchers suggests that even moderate exercise may lead to reduced iron in the blood of women Quotation(引言法)& Contrast(对比法) Women who consumed additional meat or took iron supplements were able to bounce back, she notes. "But the new exercisers who followed their normal diet showed a decrease in iron levels. "(Para. 3) Part ll(Para. 4-6) Main ldea This part is about the causes for both iron deficiency among women in general and more serious deficiency among active women Devices for developing it Cause and effect(因果法) Effect(Para. 4) Iron deficiency is very common among women in general, affecting one in four female teenagers and one in five women aged 18 to 45, respectively General causes for the effect (1) They ignore the amount of iron they take in; (2)Women's monthly bleeding is a major source of iron loss;(3)Plus, many health-conscious women increase their risk by rejecting red meat, hich contains the most easily absorbed form of iron. (4)Women often experience a deficiency as a result of their effort to control weight. Para. 4) Effect: (Para. 4) But the ratio(of iron deficiency in women) is even greater among active women, affecting up to 80 percent of female endurance athlete Specific causes for the effect Additional iron loss from exercise may be enough to tip her over the edge into a more serious deficiency. ( Para. 5)(2)Some iron is lost in sweat, and, for unknown reasons, intense endurance exercise is sometimes associated with bleeding of the digestive system. (3) Athletes in high-impact sports such as running may also lose iron through a phenomenon where mall blood vessels in the feet leak blood Part Ill (Paras 7-9) Main idea The author makes clear both the effects of iron deficiency on people's health and the importance of checking iron reserves to active people Devices for developing it General-specific(总分法) General statement:(Para. 7) There are three stages of iron deficiency Specific statements:(Para. 7) (1)The first and most common is having low iron reserves, a condition that typically has no (2)Fatigue and poor performance may begin to appear in the second stage of deficiency, when not enough iron is present to form the molecules of blood protein that transport oxygen to the working (3)In the third and final stage, people often feel weak, tired, and out of breath- and exercise4 General Conclusion: Now a new study by a team of Purdue University researchers suggests that even moderate exercise may lead to reduced iron in the blood of women. Quotation (引言法) & Contrast (对比法) : “Women who consumed additional meat or took iron supplements were able to bounce back,” she notes. “But the new exercisers who followed their normal diet showed a decrease in iron levels.”(Para. 3) Part II (Para. 4 – 6) Main Idea This part is about the causes for both iron deficiency among women in general and more serious deficiency among active women. Devices for developing it Cause and effect (因果法) Effect (Para. 4) Iron deficiency is very common among women in general, affecting one in four female teenagers and one in five women aged 18 to 45, respectively. General causes for the effect: (1) They ignore the amount of iron they take in; (2) Women’s monthly bleeding is a major source of iron loss; (3) Plus, many health-conscious women increase their risk by rejecting red meat, which contains the most easily absorbed form of iron.(4)Women often experience a deficiency as a result of their effort to control weight. (Para. 4) Effect: (Para. 4) But the ratio (of iron deficiency in women) is even greater among active women, affecting up to 80 percent of female endurance athletes. Specific causes for the effect: Additional iron loss from exercise may be enough to tip her over the edge into a more serious deficiency.(Para. 5) (2) Some iron is lost in sweat, and, for unknown reasons, intense endurance exercise is sometimes associated with bleeding of the digestive system.(3) Athletes in high-impact sports such as running may also lose iron through a phenomenon where mall blood vessels in the feet leak blood. (Para. 6) Part III (Paras. 7 - 9) Main idea The author makes clear both the effects of iron deficiency on people’s health and the importance of checking iron reserves to active people. Devices for developing it General-specific (总分法) General statement: (Para. 7) There are three stages of iron deficiency. Specific statements: (Para. 7) (1) The first and most common is having low iron reserves, a condition that typically has no symptoms. (2) Fatigue and poor performance may begin to appear in the second stage of deficiency, when not enough iron is present to form the molecules of blood protein that transport oxygen to the working muscles. (3) In the third and final stage, people often feel weak, tired, and out of breath — and exercise