理工类AB级:补全短文Why do people shrink
Did you ever see the movie Honey， I shrunk the kids? Its about a wacky dad （whos also a scientist） who accidentally shrinks his kids with his homemade miniaturizing invention. Oops！ ____1____.
For older people， shrinking isnt that dramatic or sudden at all. It takes place over years and may add up to only one inch or so off of their adult height （maybe a little more， maybe less）， and this kind of shrinking cant be magically reversed， although there are things that can be done to stop it or slow it down. ___2___.
There are a few reasons. As people get older， they generally lose some muscle and fat from their bodies as part of the natural aging process. Gravity （the force that keeps your feet on the ground） take hold， and the bones in the spine， called vertebrae， may break down or degenerate， and start to collapse into one another. ___3___. But perhaps the most common reason why some older people shrink is because of osteoporosis.
Osteoporosis occurs when too much spongy bone tissue （which is found inside of most bones） is broken down and not enough new bone material is made. ___4___. Bones become smaller and weaker and can easily break if someone with osteoporosis is injured. Older people ——especially women， who generally have smaller and lighter bones to begin with —— are more likely to develop osteoporosis. As years go by， a person with osteoporosis shrinks a little bit.
Did you know that every day you do a shrinking act? You arent as tall at the end of the day as you are at the beginning. Thats because as the day goes on， water in the disks of the spine gets compressed （squeezed） due to gravity， making you just a tiny bit shorter. Dont worry， though. ___5___.
A. They end up pressing closer together， which makes a person lose a little height and become shorter.
B. Once you get a good nights rest， your body recovers， and the next morning， youre standing tall again.
C. Over time， bone is said to be lost because its not being replaced.
D. Luckily， there are things that people can do to prevent shrinking.
E. The kids spend the rest of the movie as tiny people who are barely visible while trying to get back to their normal size.
F. But why does shrinking happen at all?
标准答案： E，F，A，C，B
解析：Why do people shrink?
1. E. 分析：段落中句意的特点：空格前面的内容讲述电影情节，所以E的出现就很自然了。在用词上kids连续使用（呼应）
2. F. 分析：在段落中利用核心结构进行跳读，发现空格前句说“……尽管人们能做一些事情来阻止”缩小“或减缓”缩小“”，比较备选项，发现F合适：F提出问题来总结该段，引起下文。
3. A. 分析： 空格前面具体讲述“地球引力对人体骨架的影响”，接着继续谈到“这种影响最终的结果”是很自然的。在用词呼应上：one another与A中的they 呼应。
4. C. 分析：空格前后句中都在提到“bone”或与“bone”相关的内容，所以C出现的可能性最大。
5. B.分析：作为文章的最后一句，该句往往具有总结性。对比剩下的选项，不难发现B合适：在句意上（好好休息一晚上后，你恢复了体力，站起来时就会还象以前那么高）解释前句句意“尽管这样，也不用担心”
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