Sports medicine experts have observed for  years that athletes such as long distance runners, especially women athletes, often display a lack of iron. 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.   

"We found that women who were normally inactive and then started a program of moderate exercise of middle degree showed sings 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.

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.

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.

There are three stages of iron deficiency. The first and most common is having low iron reserves, a condition that typically has no symptoms. Fatigue and poor performance may begin to appear in the second stage of deficiency, when not enough iron is present to form the molecules(分子) of blood protein that transport oxygen to the working muscles. In the third and final stage, people often feel weak, tired, and out of breath - and exercise performance is severely compromised.

"People think that if they're not at the third stage, nothing is wrong, but that's not true," says John L. Beard, who helped design the Purdue study. "You're not stage 3 until your iron reserves go to zero, and if you wait until that point, you're in trouble."

       Beard and other experts say it’s advisable for people to have a yearly blood test. If iron levels are low, talk with a physician to see if the deficiency should be corrected by changing your diet and taking iron-rich foods or by taking iron-added pills.

 “Select breads and cereals with the words ‘iron-added’ on the label,” writes sports diet expert Nancy Clark. “This added iron supplements the small amount that naturally occurs in grains.” Clark also recommends cooking in iron pans, as food can obtain iron from the pan during the cooking process.

64．Which of the following may be the title for the passage?

       A．Science, sports and exercise

       B．Correct iron deficiency

       C．Women, Iron and exercise

       D．Women, health and exercise

65．The third paragraph is developed mainly by________ .

       A．organizing the details according to the order of time

       B．presenting the result followed by specific causes

       C．beginnign with details followed by a general statement

       D．making comparisons ad contrasts

66．What does it mean when you are in the third stage of iron defieiency?

       A．Nothing serious though you don’t have much iron stored in the body.

       B．There is not enough iron to form the molecules of blood protein to transport oxygen.

       C．The small blood vessels in your reet are beginnig to leak blood.

       D．No iron is left in your body and you would be in trouble without urgent measures.

67．What is the writer’s attitude in writing this passage?

       A．Defensive.       B．Persuasive.      C．Supportive.      D．Objective.

第II卷 非選擇題 滿分35分

第四部分：寫作（共兩節(jié)，滿分35分）

第一節(jié)：對(duì)話填空（共10小題：每小題1分，滿分10分）請(qǐng)認(rèn)真閱讀下面對(duì)話，并根據(jù)各題所給首字幕的提示，在答題卡上標(biāo)有題號(hào)的橫線上，寫出一個(gè)英語(yǔ)單詞的完整、正確形式，使對(duì)話通順。

M: How come David is always so full of (76) e______?

W: He has a strange but highly (77) e______ way of sleeping.

M: What is that?

W: He takes a short sleep for an hour every six hours and has a (78) t______ of four hours of sleep every day.

M: Where did he get that strange (79) i_______?

W: He read from a book which (80) s_______ it was the best (81) w______ for human beings, and he believed it.

M: How many hours do you sleep a day?

W: I need at least 7 hours. I once tried to follow David’s (82) e_______, but it never (83) w______ out for me.

M: If I sleep (84) d_______ the day, I can never wake up.

W: Not everyone is David, I (85) g______.

—Shall I lock the lab now before I go home ?

   —__________ . I’ll check it myself later.

A. Don’t bother   B. No problem      C. No hurry   D. Go ahead

_____ the students in our class have in common is _____ they are all working hard to pursue their dreams.

A. What/ which      B. What/ that    C. That/ that       D. That/ which

------Mr.Smith ＿＿＿say that everything was going ahead well.

 ------So he ＿＿＿.

   A.does,did   B.did,did   C.did, does   D.does, was

There is no possibility ________ he will keep his word．He is always telling lies.

A．how  B．whether      C．when        D．that

Jack must be helping his grandma to water the flowers, ________?

       A．is he  B．isn’t he     C．must he    D．mustn’t he

第II卷（非選擇題，共35分）

第一節(jié)：短文改錯(cuò)（共10小題，每小題1分）

此題要求改正所給短文中的錯(cuò)誤。對(duì)標(biāo)有題號(hào)的每一行作出判斷。如無(wú)錯(cuò)誤，在該行右邊橫線上劃一個(gè)勾（√）；如有錯(cuò)誤（每行只有一個(gè)錯(cuò)誤），則按下列情況改正：

該行多一個(gè)詞：把多余的詞用斜線（\）劃掉，在該行右邊橫線上寫出該詞，并也用斜線劃掉。

該行缺一個(gè)詞：在缺詞處加一個(gè)漏字符號(hào)（∧），在該行右邊橫線上寫出改正后的詞。

注意：原行沒(méi)有錯(cuò)的不要改。

    As the population of the world keeps on grow,    76. __________

it gets more and more difficult feed everyone. The     77. __________

United States is one of the lucky country because it    78. __________

grows enough food for itself and still has enough to   79. __________

export to another parts of the world. One reason for   80. __________

this is why the United States is a large country with   81. __________

different kind of climate. Most of the central part      82. __________

of the country is especial fit for raising grain. Wheat 83. __________

and corn are most important crops in this district. The       84. __________

USA exports millions of tons of grain in every year.   85. __________

Swine flue is likely to cause _____ new round of panic all over ____ world.

A. a; a        B. the; the       C. a; the      D. the; a

Do ____ you think is right, ____ difficulties you may have.

A. what; however                B. that; whatever     

C. whatever; whoever             D. what; whatever