题目内容
1. We think the girl is very o ，because she enjoys working with others.
1. outgoing
again and again， out of breath， in contrast to， more than， for fear of
1. When I climbed up to the fifth floor,I was .
2. The manager refused to have his daughter in his department showing favour to her.
3. He read the English text but still couldn't recite it.
4. There are several possible explanations for the great job stability in Japan
the great job mobility in theUSA.
5. Modern education is sitting at a desk and looking at the blackboard.
at all. She doesn't have a tail.
Grace lost her tail as a baby when she got caught up in a fish trap. When the dolphin arrived at the Ocean Park in December 2005,she was fighting for her life. "Is she going to make it?" her trainer,Abbey Stone,feared the worst. Grace did make it―but her tail didn't. She ended up losing her flukes and the lower part of her peduncle.
Over the past six years,she has learned to swim without her tail. Dolphins swim by moving their flukes and peduncle up and down. Grace taught herself to move another way―like a fish!She pushed herself forward through the water by moving her peduncle from side to side.
The movements put harmful pressure on Grace's backbone. So a company of?fered to create a man-made tail for her. The tail had to be strong enough to stay on Grace as she swam but soft enough that it wouldn't hurt her.
The first time Grace wore the artificial tail,she soon shook it off and let it sink in the bottom of the pool. Now,she is still learning to use the tail. Some days she wears it for an hour at a time,others not at all. "The tail isn't necessary for her to feel comfortable," says Stone, "but it helps to keep that range of motion (动作) and build muscles (肌肉) .”
Now,the dolphin is about to get an even happier ending. This month,Grace will star in Dolphin Tale,a film that focuses on her rescue and recovery. Her pro?gress has inspired more than just a new movie. Many people travel from near and far to meet her. Seeing Grace swim with her man-made tail gives people so much courage.
5. When Grace first arrived at the Ocean Park,her trainer worried about her .
A. physical build
B. potential ability
C. chance of survival
D. adaptation to the surroundings
6. A man-made tail is created for Grace to .
A. let her recover faster
B. make her comfortable
C. adjust her way of swimming
D. help her perform better tricks
7. The story of Grace inspires people to .
A. stick to their dreams
B. treat animals friendly
C. treasure what they have
D. face difficulties bravely
3. After three hours of bitter fighting,an entire enemy column (队伍)
(摧毁) .
1. The reason for his absence is she is ill
Researchers at the University of California,San Francisco have discov?ered a gene that might explain why some people need less sleep than others. Experts say the finding opens the door into the study of sleep.
Even so,Ying-Hui Fu of the University of California? San Francisco says little is known about this basic human need. "We know very little about sleep. We don't know how our sleep is regulated," she said. "We don't know why some people need more sleep;why some people need less sleep;why most of us need eight hours of sleep;why,when we don't sleep,we don't function very well. We just don't know much about sleep at all.” Fu says sleep can be stimulated in humans when they drink alcoholic bev?erages or take sleeping pills. But she says no specific gene had been discovered that appeared to be involved in regulating sleep—until now.
Fu's research team found the sleep gene by accident while looking for a molecular mechanism (分子机制) .In the course of their studies,Fu says re?searchers identified a genetic mutation in people who go to bed at a normal time but sleep for only about six hours,feeling as refreshed when they wake up as those who appear to need eight hours or more of sleep.
Investigators genetically engineered mice to carry the mutation,and com?pared their sleep cycles and brain activity to others that did not have. They found that those with the gene slept less and were awake for longer periods of time. Mice with the mutation were also more energetic than normal mice,af?ter being deprived of sleep for 24 hours.
Although the gene mutation is thought to be extremely rare,Fu says it is a significant find for sleep researchers. "We essentially don't know anything about how sleep is regulated," she says. "But this gene is kind of opening a door for us to say, ' Now we have this gene and we know it affects human sleep quantity.，” Fu adds that the gene might be related to other medical conditions.
1. What have the researchers discovered?
A. How our sleep is regulated.
B. Why some people need less sleep than others.
C. Why most of us need eight hours of sleep.
D. Why we don't function very well.
2. According to the passage,we can know .
A. the gene can make the body awake longer
B. the gene extends people's sleep
C. the gene can improve people's sleep quality
D. the gene mutation can be found in each one
3. Which is the best title for this passage?
A. People need right sleep
B. Gene and sleep
C. Researchers discover the secret of sleep
D. Researchers discover the gene that affects sleep
6. David is good at playing football,but he is very (笨拙的) on the dancer floor.
5. Jack was chosen to be in charge of this company during the manager's (absent) .
