Read the following article and select the best answer. Article: Enough sleep is important to health. The amount of sleep needed depends on the age of the person and the conditions in which sleep takes place. The young may need more sleep than the old, but usually eight hours are enough for the health of grown-ups. Some can do with less than this amount, but others may need more. Every person knows his own need. It is then a matter of good judgment to satisfy his need. Sleep should always be enough to make one bring back his strength and get ready for a day's work. Fresh air is necessary to sound sleep. It is not without reason for some people to think that it is practicable to sleep in the open air. When one can keep himself warm, out-of-door sleeping probably gives the body its most complete relaxation . Ability to sleep is largely a habit. The conditions referred to only lead to sleep. Out-of-door exercises, a good habit of regular hours and the avoidance of late eating and worry, which are largely within the control of any person, are all helpful to sound sleep. A bath at bedtime, neither hot nor cool but of body temperature, may be helpful to sleep. Sleep-producing drug should never be taken except when suggested by a doctor. Question: The amount of sleep a person probably needs has something to do with _ . - his character - his control - his age - his habit
his age
------
Read the following article and select the best answer. Article: We are going to talk again this week about higher education for disabled students who want to study in the United States.As we noted last time,there are no special colleges or universities for blind students.But there are for deaf students.One of them is Gallaudet University in Washington,D.C. Gallaudet is said to be the world's only liberal arts university where everything is designed for deaf or hard-of-hearing students.About 2,000 students attend Gallaudet.The cost for international students is about 33,000 dollars a year. Financial aid is available in the form of scholarships,but only after the first year of studies. Most scholarship aid goes to students in financial need who do well in their first year.One scholarship for international students is for deaf students from developing countries.Another is just for students from China.The university also offers an English Language Institute.But Gallaudet says this program does not guarantee acceptance to the university. In the past year,students at Gallaudet protested against the administration's choice of a new president for the university.The protests led to the choice of a different president who is more popular with the students,Robert Davila.He is a former officer of the National Technical Institute for the Deaf.This technical college is in Rochester, New York. It is one of the eight colleges in the Rochester Institute of Technology. More than one thousand students attend the National Technical Institute for the Deaf. About one hundred of them are international students.They come from Africa, Asia,Europe and South America. The cost is about 28,000 dollars a year for an international Technical Institute student.Foreign graduate students pay about 20,000 dollars. Both undergraduate and graduate student can receive limited financial aid. They can also take part in the student employment program.This program makes it possible for students to work at the school. Question: The passage is written for _ . - blind students - deaf students - art students - dumb students
deaf students
------
Read the following article and select the best answer. Article: Researchers are now using 3D printing to create models of the human heart to help heart specialists. The heart doctors can use the models to better help patients before an operation. Dr. Bramlet, a children's heart expert at the University of Illinois College of Medicine, says the 3-D models show information he cannot get any other way. "And so what we've done with the printed models? We've pulled it out of the screen so that you can actually hold it in your hand and evaluate the anatomy ." A 3-D printer uses images from a digital display to create a physical model of a human heart. Matthew Bramlet says doctors can use the model to understand the anatomy. Pictures from medical tests like CAT scan or MRI are sent to a 3-D printer to create a heart in a plaster form. The printer then constructs the heart, thin layer by thin layer. Dr. Bramlet says the model matches the real heart in every detail. "When we're done with the model and made our decision, we want to be able to go back to the source image and confirm those findings," he says. Dr. Bramlet has built model hearts for different kinds of heart operations. All of the operations were successful. In his first case, digital images showed only one tiny hole in a baby's heart. But, the 3-D printed model showed several defects or problems that the baby was born with. Dr. Bramlet says those defects could not be seen easily in the images. The heart surgeon was able to change the type of surgery for the patient based on the 3-D model. He added that 3-D heart models saves time during heart operations. Kathy Magliato is a heart surgeon at Saint John's Health Center in Los Angeles. She welcomes the new technology. She says it could help her make better decisions before she operates on the hearts of her patients. "I can then take this very complicated structure before the operation and I can hold it in my hand and plan an operation around what I'm seeing, touching and feeling. That to me is what can potentially change the game in an operation and save lives." Dr... Question: What is the biggest advantage of 3-D models in the diagnose of heart problems? - Surgeons can see, touch and feel the 3-D models. - They can help surgeons save time. - They can be made exactly like the hearts. - They can help discover the otherwise hidden heart problems.
They can help discover the otherwise hidden heart problems.
------
Read the following article and select the best answer. Article: It was a sunny holiday Monday. Olivier Ferrante was cooking sausages on the barbecue and entertaining friends in his garden north of Paris when the phone rang. The call came from the BEA, France's air accidents investigation bureau , where the 38-year-old former football player and driver was an investigator. The news was grim. "An Airbus is missing over the Atlantic: we need you." As a safety investigator,Ferrante and his teams had participated, directly and indirectly,in the recovery of crashed planes from the Red Sea, the Black Sea,and every ocean. But this investigation would be his toughest ever: the plane had disappeared without a witness, or a trace on radar . At least eight ships and a dozen military aircraft gathered on the plane's last known position, about halfway between Brazil and Western Africa. After six days the aircraft's tail fin and 50 bodies were spotted on the surface and the first burning questions were answered. The plane wreckage and passenger injuries indicated the doomed Airbus was unbroken when it hit the water. It was not exploded apart by a bomb or lightning, now broken up by violent weather. Strangely, no mayday message had been sent by its pilots. Ferrante worked energetically with his team:collecting offers of help from around the world, consulting navy ministries and research organizations in France and elsewhere, and contracting suitable ships and high-tech equipment. He would not return home for another 29 days. His team used the Autonomous Underwater Vehicle(AUV) operated around the clock, searching about 400 square kilometers a day. But the race against time was lost and no signals were heard and no more wreckage was found. Day after day, the screen remained bare except for objects that turned out to be stones or garbage from ships. Stressed by media attention and painful meetings with victims' s,Ferrante went jogging one day to clear his head. Then he had an idea. He decided to look at what had happened to nine other planes that crashed after something abruptly... Question: What happened to the plane? - It exploded 11 km northeast of its last known position. - It was seen crashed over the Atlantic Ocean. - Something was wrong with its tail fin so that it went missing. - It was flying at high altitude before going missing.
It was flying at high altitude before going missing.
------