UNIT 2 SECTION A

Iron and the Effects of Exercise

CET-4CET-41. in evidence 明显的 give evidence for 为…提供证据2. consume with 使着迷，充满3. be absorbed in 全神贯注于……4. liable to 可能的 liable for 有法律责任的

DiscriminationDiscrimination1. bounce ， jump ， leap ， spring bounce 指反复得上下跳动，接触面常是有弹性的 jump 使用得比较普遍，常可代替其他同义词 leap 指可向任何方向的动作 spring 常指有意识的向前的动作，它与 leap 都比 jump 力度大2. leak ， split ， crack ， omit leak 作为名词是指漏洞，作动词时指渗出气体、液体等，或泄露消 息、秘密等 split 指裂口 crack 指裂纹 omit 则指遗漏人、事物、内容等

课 程 讲 解 The iron element is important to our body

Read the new words

Explain the passage

1. Iron and protein componrnts of blood el. Iron and protein componrnts of blood elements.Iron is also involved in the synthements.Iron is also involved in the synthesis of cytochrome.esis of cytochrome.铁和蛋白质组成血红素。铁还参与细胞色素的合成。

2. Iron is also involved in tissue cells i2. Iron is also involved in tissue cells in the respiratory process participation fun the respiratory process participation fuck blood transport and hepatic detoxficatick blood transport and hepatic detoxfication.on.参与组织呼吸的过程，参与脂类从血液中转运和肝脏的解毒。

3. Iron catalyzed antibody production, i3. Iron catalyzed antibody production, improving immunity.mproving immunity.催化抗体的产生，提高免疫力。

4. Iron deficiency anemia and pysplasi4. Iron deficiency anemia and pysplasia and low IQ.a and low IQ.缺铁导致贫血，发育不良。

5. Decreased endurance and fatigue.5. Decreased endurance and fatigue.缺铁导致耐力下降，疲乏无力。

6. Affect the digestive system func6. Affect the digestive system function and decreased appetite.tion and decreased appetite.影响消化系统功能，食欲下降。

Text Analysis-- StructureText Analysis-- Structure

Part 1 (Para 1-3) Exercise, even moderate exercise, may lead to reduced iron in the blood of women. There are three groups of people who are likely to suffer from iron deficiency.

Part 2 (Para 4-6) Iron deficiency is very common among women. The causes for iron deficiency among women.

Part 3 (Para 7-12) The effects of iron deficiency on people’s health and the importance of checking iron reserves.

Para 1. Sports medicine experts have observed for

years that endurance athletes, particularly females, frequently have iron deficiencies. 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.Para 2. “We found that women who were normally inactive and then started a program of moderate exercise showed evidence of iron loss," says Roseanne M. Lyle, associate professor at Purdue. Her study of 62 formerly inactive women who began exercising three times a week for six months was published in the journal Medicine & Science in Sports & Exercise.

Para 3. “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. 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. But the ratio is even greater among active women, affecting up to 80 percent of female endurance athletes. This means, Lyle says, that "too many women ignore the amount of iron they take in". Women of child-bearing age are at greatest risk, since their monthly bleeding is a major source of iron loss. Plus, many health-conscious women increase their risk by rejecting red meat, which contains the most easily absorbed form of iron. And because women often restrict their diet in an effort to control weight, they may not consume enough iron-rich food, and are liable to experience a deficiency.

Para 6.

Exercise can result in iron loss through a variety of mechanisms. Some iron is lost in sweat, and, for unknown reasons, intense endurance exercise is sometimes associated with bleeding of the digestive system. Athletes in high impact sports such as running may also lose iron through a phenomenon where small blood vessels in the feet leak blood.

Para. 5

“The average woman takes in only two thirds of the recommended daily allowance for iron," notes another expert. “For a woman who already has a poor iron status ,any additional iron loss from exercise may be enough to tip her over the edge into a more serious deficiency," notes the expert.

Word

PP11. endurance n.. endurance n. 容忍、忍受 endure vendure v.. 忍受痛苦等不好的东西

moderate adjmoderate adj.. 适度的at a moderate priceat a moderate price

WordPP22. associate adj. . associate adj. 联系 associate vassociate v.. associate withassociate with 使发生、把…联系起来

evidence evidence 迹象证据 formerly formerly 以前 , 从前 journal journal 杂志期刊

PP3. consume 3. consume 消费、消耗、吃、喝 be consumed with be consumed with 被…吞噬 supplements supplements 增补 bounce back bounce back 恢复健康 bounce bounce 跳、反弹、跳起 bounce about bounce about ① 蹦… 跳… ② 强迫、诈骗 bounce sb into(out of)doingbounce sb into(out of)doing 强迫某人做 ( 不做 ) 某事

Word

Word PP44.. respectively respectively 分别、各自 ratio ratio 比率、比例 up to up to 高达 absorb=take in absorb=take in 　 　 吸收 at risk at risk 处于危险之中 monthly bleeding monthly bleeding 月经 plus=and plus=and 而且、并且 health-conscious health-conscious 健康意识 restrict v. restrict v. 控制、限制 be restricted to = be restricted to = be limited tobe limited to

Word

PP5. tip sb. over the edge5. tip sb. over the edge 使某人受不了 allowanceallowance 限额、津贴 allowance of ironallowance of ironPP6. result in 6. result in 导致 result from result from 由于 / 起因 intense endurance exercise intense endurance exercise = = high-impact sportshigh-impact sports 高强度运动