*Question*
Read the following article and select the best answer. Article: Tulou, the special residential architecture of Fujian Province was included on the UNESCO's World Heritage List during the 32ndsession of the World Heritage Committee in Quebec, Canada. In the fourth century, Han Chinese living in the Central Plains area began to migrate south, gradually gathering in Fujian and forming the Hakka communities. As a defence against enemies, the Hakkas chose to live in compact communities, and the tulou was their preferred houses. Tens of thousands of such earthen structures were constructed in Fujian Province. Most tulous are to be found in the valleys, surrounded by high mountains, and some are in the depths of the great mountains. Most are three to four stories high, and look like circular blockhouses . Rooms on the first floor are used as kitchens, rooms on the second floor are used as barns , and rooms on the third and fourth floors are for bedrooms and living rooms. For defensive purposes, the rooms on the first floor have no windows. Raw materials for the tulou were obtained locally. Their main building material was a mixture of clay, sand, lime and water, and egg whites, brown sugar and rice water were added as adhesive agents . It was then mixed to form the walls. Once they dried, the walls were so hard that driving a nail into them would have been difficult. Fir branches, which are extremely strong and do not rot, were used to strengthen them, and many centuries later they have remained their original look. Tulous are located in a region where earthquakes happen frequently, and their circular construction helps them resist the regular shocks. The proven design even inspired one famous Peruvian architect, who paid several visits to Yongding, to build a tulou back home. Not long after, an earthquake struck only 10 kilometers away, and while all the houses around the earthen building fell down, his tulou remained. Question: Which of the following is TRUE according to the passage? - Hakkas built tulous when they lived in the Central Plains area - Raw materials for the tulou were obtained from far away - It is difficult to dig a hole into the walls of the tulou - Fir branches may help them resist the regular shocks
**Answer**
It is difficult to dig a hole into the walls of the tulou

*Question*
Read the following article and select the best answer. Article: My grandson, Daniel, and I have always been very close. When Daniel's father remarried after a divorce, Daniel, who was eleven, and his little sister, Kristie, came to live with us. My husband and I were more than happy to have kids in the house again. Things were going along just fine until the diabetes I've lived with most of my adult life started affecting my eyes, and then more seriously, my kidneys . Then everything seemed to fall apart. Three times a week, I had to go to the hospital to be hooked up to a dialysis machine . I was living, but I couldn't really call it a life -- it was an existence. I had no energy. I dragged myself through daily chores and slept as much as I could. My sense of humor seemed to disappear. Daniel, seventeen by then, was really affected by the change in me. He tried as hard as he could to make me laugh, to bring back the grandma who loved to clown around with him. Even in my sorry state, Daniel could still bring a smile to my face. But things were not improving. After a year on dialysis, my condition was deteriorating and the doctors felt that if I didn't receive a kidney transplant within six months, I would surely die. No one told Daniel this, but he knew -- he said all he had to do was look after me. To top it off, as my condition worsened, there was a chance that I would become too weak to have the transplant surgery at all, and then there would be nothing they could do for me. So we started the tense and desperate wait for a kidney. I was adamant that I didn't want a kidney from anyone I knew. I would wait until an appropriate kidney became available, or I would literally die waiting. But Daniel had other plans. The time that he took me to my dialysis appointments, he did a little secret research on his own. Then he announced his intention to me. "Grandma, I'm giving you one of my kidneys. I'm young and I'm healthy ..." He paused. He could see I wasn't at all happy with his offer. He continued, almost in whisper, "And most of all, I couldn't stand it if you... Question: Grandma's diabetes brought about all the following EXCEPT that _ . - her eyes and her kidneys were affected - grandma became quite a different person - Daniel had to be sent back to his father - everything was thrown into confusion
**Answer**
Daniel had to be sent back to his father

*Question*
Read the following article and select the best answer. Article: The best swimmers tend to be tall and thin with long arms, long legs, long feet, and long hands. The size of their hands gives them great "water grasp", and only a very small hand movement keeps them afloat. They also have great strength, endurance, insulation against heat loss while in water below body temperature, thus better energy conservation, low resistance when in the water, and swimming stroke mechanics . Part of the reason why some people are better swimmers than others has to do with body density. The average person's body density is slightly less than that of water. Muscle has greater density than fat. Therefore, very muscular people tend to be poor at staying afloat. Bone has greater density than fat. Therefore, very skinny people tend to be poor at staying afloat. Good buoyancy is not necessarily the most important factor in good swimming, but it certainly helps. For example, great competitive swimmers--tall, thin, and usually more muscular than average--tend to have greater body density than average and less buoyancy. Many would not float very well if they remained motionless in the water. Their much greater "water grasp" makes up for it. www.ks5u.com The average woman contains a higher proportion of fat in her body than the average man, and the average man contains a higher proportion of muscle in his body than the average woman. Therefore, in general, women are better floaters than men. Compared with other competitive sports, the performance of women is closer to that of men in competitive swimming. Question: What can we learn from the passage about body density? - Higher body density reduces swimming ability. - A person's body density decides one's swimming ability. - Fat people can always swim faster than thin people. - People with a lower proportion of muscle can hardly swim.
**Answer**
Higher body density reduces swimming ability.