(Q).
As temperatures go up, bison get smaller. Joseph Craine, research assistant professor in the Division of Biology at Kansas State University, examined how climate change during the next 50 years will affect grazing animals such as bison and cattle in the Great Plains. "Bison are one of our most important conservation animals and hold a unique role in grasslands in North America," Craine said.  "In addition to their cultural and ecological significance, they're economically important.  There are about half a million bison in the world." Craine analyzed a data set of 290,000 weights, ages and sexes collected from 22 bison herds throughout the U. S. The organizations kept annual records of each animal in the herd and matched the data with the climates of the sites. Based on differences in sizes of bison across herds, Craine found that during the next 50 years, future generations of bison will be smaller in size and weigh less. Climate is likely to reduce the nutritional quality of grasses, causing the animals to grow more slowly. "We know that temperatures are going to go up," Craine said.  "We also know that warmer grasslands have grasses with less protein , and we now know that warmer grasslands have smaller _ . It all lines up to suggest that climate change will cause grasses to have less protein and cause grazers to gain less weight in the future." Craine said the results of climate change in coming decades can already be seen by comparing bison in cooler, wetter places with those in warmer, drier places. For example, the average 7-year-old male bison in South Dakota weighed 1, 900 pounds, while an average 7- year-old male bison in Oklahoma -- a warmer place -- weighed 1, 300 pounds. "The difference in temperature between those two states is around 20 degrees Fahrenheit, which is about three times the projected increase in temperatures over the next 75 years," Craine said. "It is a clear indicator that long-term warming will affect bison and is something that will happen across the U.S. over the next 50-75 years." In the next fifty years, researchers Say, bison will   _  . A) become smaller and lighter B) disappear in the Great Plains C) play a less important part D) adapt to different climate changes
(A).
A


(Q).
Mr. Black was the manager of a hotel in Atlanta. One weekend all of the hotels were full because of a large business meeting being held in the city. On Sunday night, three men came into Mr. Black's hotel and asked for rooms. Mr. Black told them that there were no more rooms available. The men didn't know what to do because they had no place to stay in. Mr. Black wanted to help them. He remembered that there was an empty room at the far end of the first floor -- Room 112. It was a very small room, and had rarely been used as a guest room before. So, he asked the three men if they would mind sharing that small room. They replied that they would be very satisfied so long as there was a room for them to stay in for the night. Mr. Black then told them that the room would cost them $ 30 in total. On hearing this, each of the three men gave Mr. Black $ 10 before they left for their room. However, Mr. Black soon began to think that $ 30 was really too much for that small room. He called his assistant over and said, "Here is $ 5. Give it back to the three men in Room 112. Each of them paid me $10. That's too much." The assistant took the money. While he was on the way to that small room, he thought, "How can three men divide $ 5?  I'll give each of them only $ 1 and keep the $ 2 left to myself. The men will be happy to get anything back, and I can also make some money that way. After all, Mr. Black will never know anything about it." So, the assistant returned only $1 to each of the three men. Each man had first paid $ 10. After the assistant returned $1 to him, each man had actually paid only $ 9. There were three men. $ 9x3="$27." The assistant kept $ 2. $ 27 + $ 2=" $" 29. Where is the missing dollar? How were the manager and his assistant in behavior? A) The manager was honest but the assistant was not. B) The manager worked hard, but the assistant was lazy. C) The assistant was clever but the manager was not. D) The manager did not know how to make money, but the assistant did.
(A).
A


(Q).
Dear Sara, As we drove off from Columbia,I wanted to write a letter to you to tell you all that is on my mind.First,I want to tell you how proud we are.Getting into Columbia College shows what a great well-rounded student you are.Your academic,artistic,and social skills have truly blossomed in the last few years.Whether it is getting the highest grade in mathematics,completing your elegant fashion design,successfully selling your painted running shoes,or becoming one of the top speakers in Model United Nations,you have become a talented and accomplished young woman.You should be as proud of yourself as we are. College will be the most important years in your life.It is in college that you will truly discover what learning is about.This will be the period where you go from teacher-taught to master-inspired,after which you must become self-learner.So do take each subject seriously,and even if what you learn isn't critical for your life,the skills of learning will be important to you forever. Follow your passion in college.Take courses you think you will enjoy.Don't be trapped in what others think or say.Do your best in classes,but don't let pressure get to you.Your mother and I have no expectations for your grades.If you graduate and learn something in your four years,we would feel happy.So please don't give yourself pressure. I told your mom I'm writing this letter,and asked what she wanted me to say.She thought and said:"Just ask her to take care of herself."Please listen to your mother and take care of yourself. So please treasure your college years,make the best of your free time,and become an independent thinker;learn and grow through your successes and challenges. Love, Dad(& Mom) Sara'performance in the last few years makes his parents   _  . A) annoyed B) proud C) upset D) concerned
(A).

B