Read the following article and select the best answer. Article: Japanese doctors have used thin sheets of tissue from people's cheeks repair damaged corneas . A team from Osaka University transplanted thin layers of cheek cells onto the eyes of four patients with a rare and painful eye condition,reports BBC online. Patients whose vision had been cloudy could see well afterwards,and the"new corneas"remained clear more than a year after the operation. Doctors can also take cells from a healthy eye and grow them in a dish to produce a new cornea,or they can transplant corneas from donors . But these techniques may not work when both eyes are too badly damaged by accident or disease. The team hope their work may help solve the problem and lead to other types of grow-your-own tissue transplants. The cornea is the clear layer of cells on the surface of the eye. It can be damaged by trauma or by a range of diseases. The team worked with four patients who had a painful condition that causes cloudy corneas and dry eyes. Often the eye can regenerate cornea cells but none of the four patients had this ability. The researchers took a 3 mm-wide square of tissue from inside the mouth(cheeks)and grew it into a thin layer in the lab. They used a special low temperature technique to separate a very thin sheet off each batch. They then laid that onto the patient's eye. The cell layers stuck onto the eye and developed into tissue that looked and acted like a healthy cornea. However,long-term follow-up and experience with a large series of patients is needed to assess the benefits and risks this method. Yet,"it does offer the potential of treating severe eye diseases that are resistant to standard approaches,"said the head of the research,Kohji Nishida. Question: Now doctors can repair the damaged corneas with the following methods Except _ . - by using mouth tissue - by taking cells from a healthy eye and growing them in a dish - by transplant corneas from another person - by using finger tissue
by using finger tissue

(Question)
Read the following article and select the best answer. Article: China Daily Oct. 11----The ministry of Health has called for more awareness from the public on the mental health of the young, as part of efforts to make World Mental Health Day which fell on Friday. More than 15 percent of Chinese youths have been found with mental problems, and about 30 million young people under 17 are suffering from depression, the Shang-based Wenhui Daily reported. The World Health Organization estimates that before 2020, the rate of children with mental problems will increase to 50 percent, and mental problems will become a major factor behind deaths and illness in the young worldwide. Deng Xiaohong, the spokesperson for the Beijing Municipal Health Bureau, said rapid changes are one of the reasons behind the rising number of youngsters with psychological problems. If these mental diseases are not addressed on time, occurrence of crimes, drug-taking and other dangerous behavior are expected to rise. Experts said mental diseases could be caused by many factors, such as the inability to handle interpersonal relations well, unstable emotions and pressures from an overload of studies. A number of experts have also said the one-child policy is another reason leading to poor mental health in the young. Children are said to be too " spoiled" and "selfish" in a one-child family. It's reported schools in many cities are rolling out measures to help students maintain their mental well-being. Yin Jingmiao, a teacher of the Beijing No.105 Middle School, told China Daily that the school invites psychologists to provide counseling to students three times a month." Students can be arranged to have 40-minute counseling sessions," Yin said. The school also gives lectures on mental health to senior grade students before they take the national college entrance exams to help ease any anxiety arising from the tests. Question: Which could be the consequence if the problem is left untreated? - Inability to handle interpersonal relations. - Unstable emotions - Drug-taking and other dangerous behavior - Rapid social changes
(Answer)
Drug-taking and other dangerous behavior

Ques: Read the following article and select the best answer. Article: I climbed Kilimanjaro with Lava Expeditions during the rainy season. I flew to Nairobi in Kenya and spent several days there. At my hotel in Nairobi I met the rest of the group with whom I would spend the next week. We all travelled on the bus together for a 6-hour journey into Tanzania and then Arusha , a quiet town. After we arrived at our hotel in Arusha , we had dinner and a few drinks. Then we were introduced to more members including Taddeus Minja, the main guide, who was very experienced -- climbing Kilimanjaro runs through the generations of his family. The next day the Lava Expeditions members checked if we had the correct and enough clothing for our expedition on Kilimanjaro. Only one person needed to bring more clothes. After that we set off, walking in the rain through the beauty of the rainforest, all the way to the first camp. I was happy the next few days as the view was so wonderful and changed every day. I suffered a little during the trip and I felt so tired. But the members of Lava Expeditions provided me with lots of encouragement, which was one of the best memories. Finally we reached the top of Kilimanjaro in bright blue skies. I felt excited about climbing Kilimanjaro and the feeling didn't change during my trip. Lava Expeditions looked after me so well that I was deeply thankful for their help. Question: What is the author's purpose in writing this passage? - To tell readers about Lava Expeditions. - To give readers advice on climbing Kilimanjaro. - To encourage more people to climb Kilimanjaro. - To share his experience of climbing Kilimanjaro.
Ans: To share his experience of climbing Kilimanjaro.

Ques: Read the following article and select the best answer. Article: What could be cuter than your puppy giving his doggy friend a kiss on the nose? Nothing, really. But is your dog actual-fly planting a kiss on his friend? Yes, but that's only one of the reasons your dog may lick another dog's nose. Here are some other reasons why your dog may lick another dog's nose. During an introduction, a shy and lower-ranking dog will lower his head, avoid direct eye contact and gently extend his tongue to lick the nose of a more confident and high-ranking dog. The first dog licks the nose of the second dog to simply make it know that:he comes in peace. Dogs who are already friends will also trade kisses. Two strongly bonded dog pals will lick and clean each other. They give each other "dog kisses" showing friendship. Puppies also "kiss" their mothers, but it's not a gesture of love. When puppies stop suckling their mothers' tits for milk and start to eat semisolid food instead;they lick their mothers' mouths and noses in the hope of getting the mother to regurgitate some semi-digested food. So how to help your _ dog make friends with other dogs? You can carefully select confident-but-friendly and good-tempered dogs to play with your shy dog, to help him develop his social skills. Also consider taking him to a special training class that focuses on socialization and positive training technique. Do not disturb them when your two dogs play "kiss" briefly with each other. Sit back and enjoy this display of friendship. Then call them over and have them do a command such as "sit'' or "shake paws". Offer them treats as a reward for being good to each other. If you foster a dog and have three or more resident dogs, introduce the foster dog to your brood dog one at a time and let muzzle licking between them happen naturally. Start with your least reactive or most friendly dog. Never force an in production between the dogs because this can deepen the foster dog's submissiveness or spark a fight. Question: What should you do if your two dogs play "kiss" briefly with each other? - Ask them to stay away from each other immediately. - Ask them to shake tails. - Ask them to have a fight. - Give them a reward for being friends.
Ans:
Give them a reward for being friends.