问题 选择题

饮食、饮水中缺少哪种物质可引起地方性甲状腺肿大?(  )

A.钙

B.铁

C.维生素B1

D.碘

答案

无机盐对人体非常重要,它是构成人体组织的重要原料,如果缺乏就会表现出相应的缺乏症.铁是构成血红蛋白的一种成分,人体缺铁会使血红蛋白的合成发生障碍,从而使人体内血红蛋白的含量过低,导致贫血.无机盐中含有的钙磷是构成骨骼和牙齿的重要成分,缺钙易引起佝偻病.人体合成甲状腺激素的原料之一就是碘,缺碘会造成甲状腺激素分泌不足,这种情况被神经传到下丘脑,下丘脑就发出“指令”--促甲状腺激素分泌激素,这种激素传到甲状腺后造成甲状腺生长过度,也就是甲状腺肿大(即地方性甲状腺肿)了.缺乏维生素B1易患脚气病、神经炎等.可见D符合题意.

故选:D

阅读理解

Reading Oliver James'Affluenza, I thought about what often happens at home. My 12-year-old daughter is in tears."I have so take a test tomorrow. I don't understand any of it," she cries out. After shouting and shutting her door, she calms down enough to go through her notes. The following dry I ask her how the test went and the just says "OK,I got a nine".

"Wow. well done!" I say, before she finishes with "But I never get a ten!"

According to James, this obsession with getting top marks has been a bad development, which encourages people to think of education in terms of work and money. To test this, I asked my daughter why she was so worried about her tests. She looked at me as if I was thick. "Well, if I don't get good grades, I won't be able to afford nice things like a car and stuff."

I was quite surprised, because I don't consider myself a pushy parent. But James suggests and it leaves students feeling failures even if they are very bright. He points to the Danish system(体制)of education as a better model. Creating happy citizens who have good social skills is seen as more important than high achievements at school or the needs of business.

For me, I cannot remember the last time I had to work out the area of a circle, recite a Shakespeare poem or grammar rules, yet I have lived a happy life. What I really needed to learn at school was how to make polite conversations, or how to avoid getting into debt or how to develop good personality.

This is in fact similar to what Oliver James really has in mind. And he is looking for schools where students are encouraged to find and follow their own interests, something more like Tongjon. Tongjon has been developed in some Korean private schools. It is quite different from the more rigid system of learning things by heart that is used in Korea, and indeed in many other school systems around the world.

As the Russian poet Pushkin said," Inspiration(灵感)is needed in geometry(几何学)just as much as in poetry ",and inspiration does not come from endlessly revising for tests or getting worried about them .

小题1:What does the writer probably think of his/her daughter?

A.She sets herself a goal too high to reach.

B.She should be more polite to her parents.

C.She is hard-working but not very bright.

D.She takes her grades much too seriously.小题2:What does the word "obsession"in paragraph 3 mean?

A.A plain and unavoidable fact.

B.A satisfied and very proud state.

C.A practical and widely-used way.

D.A fixed and often unreasonable idea.小题3:What can we infer from the passage?

A.Social skills are as important as high grades.

B.Interest in grades can shake self-confidence.

C.The writer regrets not having studied hard at school.

D.Danish educational system is for very smart students.小题4:The writer wants to tell us that____.

A.learning happily is the key to self-development.

B.top marks may be helpful to increase one's interest.

C.tests should be improved to give children inspiration.

D.education should meet one's needs for word and money.

单项选择题