Alaskan black bears hibernate for up to seven months a year, during which time they do not eat or drink, before waking up in virtually the same physical state they fell asleep in．
Now experts hope to develop methods of putting humans into a similar state which could help astronauts survive long missions and lead to new ways of treating severely ill patients．
While many studies have examined hibernation in mice and hedgehogs, little research has been done into the same condition in larger mammals such as bears．
But new research conducted at the Institute of Arctic Biology at the University of Alaska monitored the animals' body temperature, heart rate and muscle movements while they slept.
The research results showed that during a five-month hibernation the bears’ body temeratures varied between 30℃ and 36℃ in cycles that lasted between two and seven days—a pattern that was previously unknown in hibernating animals.
The research project leader said, "If our research could help by showing how to reduce metabolic(新陈代谢的) rates and oxygen demands in human tissues, one could possibly save severely ill patients. We simply need to know how to turn things on and off to take advantage of the different levels of hibernation."
Craig Heller, of Stanford University, who contributed to the study, added: "There has always been a thought that, if there is ever long-distance space travel, it would be good to be able to put people into a state of lower metabolism or a state of hibernation. That's almost science fiction but you can see the logical basis."
We know from the text that .
A．during winter Alaskan black bears sleep for more than half a year
B．researchers have examined hibernation in humans
C．experts have got no results from their research
D．Craig Heller is a leader from the Institute of Arctic Biology
The best topic of the text should be ．
． A．The Latest Research Results
B．New Methods of Putting Humans into Hibernation
C．Alaskan Black Bears Hibernate
D．Astronauts Could Hibernate Like Bears
According to the text, we can infer that .
A．many studies have examined hibernation in mice and bears as well
B．humans' body temperatures vary between 30℃ and 36℃ while they sleep
C．research into hibernation in animals may help deadly patients stay longer
D．scientists have already take advantage of the different levels of hibernation in space missions
科目：高中英语 来源： 题型：阅读理解
After spending three days in a wheelchair, I was ready to quit. Not only did I have to battle cracked (裂缝的) and uneven (不平的) pavements, I had to deal with the bad attitude of pedestrians (行人) and a cold rain. But I didn’t give up because of people like Tiffany Payne.
Payne, who has been using a wheelchair for 18 years, laughed at me:
“Imagine trying to get around town in the winter,” she said.
I could see her point: You’re battling to get to a doctor’s appointment (预约), but no one has shoveled (铲) after a big snowfall. Your choices: Move out and risk getting stuck, or reschedule the appointment.
Those of us fortunate enough to get around on our own two legs don’t give a second thought to the person in a wheelchair next to us at a crosswalk. That would require us to look down.
So I decided to try using a wheelchair to get a sample of what their lives are like. It wasn’t long before I saw that people who use wheelchairs are forced to deal with a lot of trouble.
During my experiment, I was ignored by store staff while shopping and bumped into by inattentive (疏忽的) walkers without so much as an apology.
Some people even gave me angry looks as if I were the one at fault.
Once in a store, a woman bumped into me trying to get to the new iPad. She didn’t say, “Excuse me.”
When salespeople did offer assistance, they talked to people who were with me, instead of me. I wanted to yell: “Hey, I’m down here!”
Some salespeople talked to me as though I were a child or acted like they didn’t want to be bothered with me.
People who use wheelchairs want to be treated like everyone else. They also comprehend (理解), so you don’t have to speak to them in a childlike, sing-song voice. It’s not very appealing (吸引人的), especially when the person is an adult. And most importantly, remember they have feelings that can be hurt just like yours.
Spending three days in a wheelchair made me look differently at those who have to use one. I hope you do the same.
By James E. Causey
The author writes the story to _______.
A. help those in wheelchairs gain self-confidence
B. share his experience of acting as a wheelchair user
C. ask people to show sympathy for those in wheelchairs
D. call on people to respect and help those in wheelchairs
During his three days in a wheelchair, the author met all of the following
difficulties EXCEPT ______.
A. bad road conditions B. poor attitudes of ordinary people
C. terrible medical service D. bad weather
What can we conclude from the article?
A. A wheelchair user may feel offended when you do not address him or her directly.
B. Assistants in big stores are usually kind to people in wheelchairs.
C. People in wheelchairs should fight for fair treatment.
D. People in wheelchairs are usually hard to get along with.
Which of the following statements would the author agree to?
A. Look down on a person in a wheelchair.
B. Speak to a person in a wheelchair in a sing-song voice.
C. Treat a person in a wheelchair as you would any other person.
D. Offer assistance to a person in a wheelchair without asking for permission.
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
完形填空（共20小题；每小题1.5分，满分30分）
阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
I teach biology at UNLV three times per week . Last Monday , at the beginning of class , I cheerfully asked my 21 how their weekend had been . One young man said that his weekend had not been so 22 . He had his wisdom teeth removed . Then he went on to ask me why I always seemed to be so 23 .
His question 24 me of something I’d read somewhere before : “Every morning when you get up , you have a 25 about how you want to deal with life that day .” I said . “I choose to be cheerful .”
“Let me give you an example ,” I continued , 26 all sixty students in the class . “In 27 to teaching here at UNLY , I also teach out at a 28 in Henderson , 17 miles down the highway from where I live . One day a few weeks ago I drove those 17 miles to Henderson . I 29 the highway and turned onto College Drive . I only had to drive another quarter mile down the road to the college . But just then my car 30 .I tried to start it again , but the 31 wouldn’t work . 32 I turned my flashers on , took my books , and 33 down the road to the college .”
“As soon as I got there , I called and 34 for a tow truck to meet me at my car after 35 . The secretary there asked me what had happened . ” This is my 36 day .” I replied , smiling .
She was 37 . “What do you mean ?”
“My car could have broken down anywhere along the highway . It didn’t .” I relied . “ 38 , it broke down in the perfect place : off the highway , 39 walking distance of here . I’m still able to teach my class , and I’ve been able to get the tow truck to meet me after class . If my car was meant to break down today , it couldn’t have been arranged in a more convenient 40 .”
I ended my story . In spite of the early hour , no one in my class seemed to be asleep . Somehow , my story had touched them .
A. students B. schoolmates C. children D. teachers
A. bad B. sad C. good D. free
A. grateful B cheerful C. hopeful D. thankful
A. reminded B. informed C. told D. warned
A. decision B. preference C. judgment D. choic
A. showing B. demanding C. commanding D. addressing
A. contribution B. addition C. devotion D. application
A. college B. school C. university D. institute
A. found B. exited C. crossed D. entered
A. broke B. ended C. died D. finished
A. instrument B. engine C. wheel D. light
A. So B. But C. And D Or
A. drove B. marched C. rode D. followed
A. prepared B. looked C. arranged D. waited
A. work B. study C. lunch D. class
A. usual B. lucky C. unusual D. unlucky
A. astonished B. excited C. pleased D. puzzled
A. Anyway B. Also C. Instead D. Still
A. beyond B. without C. within D. along
A. order B. way C. need D. situation
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
完形填空（共20小题；每小题1.5分，共30分）
阅读下面短文，从短文后所给的A、B、C、D四个选项中选出可以填入空白出的最佳选项。
?Long time ago, if a child had some problems in his life, he might go home and write in his 21 . Now, a child with the same problems might go onto the Internet and write about them in a blog（博客. In many ways, a diary and a blog are very 22 .So, what makes blogging different from writing in a 23 diary?
The biggest difference is that blogging is much more 24 than a diary. Usually, a teenager treats her diary like a book full of 25 that she does not want to 26 .
It’s interesting that someone who writes in a blog 27 a diary will probably write nearly the same information.
I have a little sister, and sometimes I go online to read her blog. She 28 about things like waking up early for swimming practice and not studying enough for her chemistry test. 29 I was her age, I wrote about the same things, but 30 in my diary. Then, after I had finished writing, I would hide my diary in a secret place because I was 31 that my sister might read it!
The biggest 32 with blogging is that anyone can read what you write. If I were angry with a friend during high school and wrote something 33 about her in my diary, she would never know. 34 , if my sister ever wrote something bad about a friend, that friend 35 read her blog and get angry.
There are also 36 to blogging, of course. If I were feeling sad one day and wrote in my diary, “Nobody cares about me,” 37 would know about it. However if my sister wrote the same sentence in her blog, her best friends would 38 respond（回应）and tell her how much they like her. Blogs help people 39 in contact with their friends and to hear what the people 40 them are doing.
A．notebook B．diary C．blog D．book
A．familiar B．same C．similar D．different
A．old B．real C．daily D．traditional
A．convenient B．secret C．public D．cheap
A．secrets B．mysteries C．questions D．puzzles
A．publish B．share C．solve D．answer
A．instead B．as well as C．in favor of D．instead of
A．wonders B．learns C．writes D．worries
|
