Read the following article and select the best answer. Article: Half the world's population could face a shortage of food by 2100 due to climate change, a new report by US scientists warns. Rapid global warming is likely to reduce crop production in the tropics and subtropics , according to Professor David Battisti of the University of Washington. "The most extreme summers of the last century will become common," he says. "We must immediately create crops that can bear heat and drought if we are to adapt in time," he writes in Science journal. "The stresses on global food production from temperature alone are going to be huge," said Mr. Battisti. "And that doesn't take into account water supplies stressed by the higher temperatures." He worked with Professor Rosamond Naylor on Food Security and the Environment, to examine the influence of climate change on the world's food supplies. They predict there is a greater than 90% probability that by 2100, the average growing-season temperatures in the tropics and subtropics will be higher than any temperatures recorded there to date. "We are taking the worst of what we've seen historically and saying that in the future it is going to be a lot worse unless there is some kind of adaptation," said Professor Naylor. "This is a powerful reason for us to invest in adaptation, because it is clear that this is the direction we are going in terms of temperature and it will take decades to develop new food crop varieties that can better bear a warmer climate." "In the tropics, the higher temperatures could be expected to cut production of the primary food crops by 20-40%," the researchers said. Rising temperatures are also likely to reduce soil moisture , cutting production even further. Three billion people live in the tropics and subtropics now, and their number is expected nearly to double by the end of the century. "You are talking about hundreds of millions of additional people looking for food because they won't be able to find... Question: According to Professor David Battisti, what should be done to deal with crops reduction caused by global warming? - To develop new crops - To plant more crops. - To control population growth. - To improve farming technology.
To develop new crops

Read the following article and select the best answer. Article: My life as a 'runner' began by running in a playground near my home in order to lose weight about 2 years ago. As time went by, I found myself so good at running that sometimes, I even forgot how many rounds I ran around the playground. Thanks to all this practice, I was able to win the 5thplace in short course marathon game at 'BASF Yeosu Site Athletic Competition' held in October 2002. This event inspired me to take part in public short-course marathon games such as 10km, 20km and half-course competitions. Finally, in May 2003, I was able to complete a full course marathon for the first time of my life. My next challenge was the Boston Marathon race, which is the world's oldest and most famous marathon races. To qualify for the Boston Marathon, one should meet the designated time standard of their age group at a certified marathon. So I took part in ChunCheon Marathon in Korea. I had to finish the full coursewithin 3 hours and 30 minutes to meet the time standard for my age group (45 to 49 years old). But to my pleasant surprise, I recorded 3 hours 22 minutes, which is 25 minute faster than my previous best record! In April 2004, I was finally able to go to Boston. I was very pleased and proud because I could play a role to promote BASF all across the world through this sport. And it really happened! When I ran in the Boston Marathon wearing BASF logo , people along the streets rooted for me shouting 'BASF! BASF!'. I was very touched and so proud of my company. Of course I completed the full course successfully. After the game, I was interviewed by Korean local newspapers and had an opportunity to appear on several TV shows, which helped me to promote BASF in the community. Question: From the passage we can learn that BASF is _ . - a company - a book - a piece of sports equipment - a city
a company

Q: Read the following article and select the best answer. Article: The survey by The Harvard Crimson was emailed to incoming first-year undergraduates; 1,600 students responded. Results showed that at least a tenth of the students polled admitted to having cheated on an exam before staring at the university, while almost half admitted to cheating on their homework. Athletes were apparently the most prone to cheating. 20 percent of students who played a university sport admitted to cheating on an exam compared to 9 percent of students who did not. The survey also revealed that men were not only more likely to cheat but were also more likely to admit to it. The results, compared to a previous survey done on the class of 2013, suggested that cheating may be becoming more commonplace. Of the outgoing seniors only 7 percent admitted to cheating on an exam and another 7 percent said they had been dishonest on a take-home test. 32 percent of the seniors said they had cheated on homework during their undergraduate years. The survey come in the wake of a cheating scandal at the university which saw 120 students investigated for sharing answers on an exam in 2022. One recent graduate stated:" Cheating was commonplace when I was at Harvard, especially with students in their first year or two. I would say as many as 60 percent of students took notes into some exams. No one really cared and the faculty, will some of them at least, seemed to recognize and yet ignore the problem. " In an email to NBC news, Jeff Neal, a Harvard representative, explained that a committee, made up of faculty, staff and students had been established to tackle cheating, which "is a national problem in American education". Question: According to Para. 4 and Para. 5, which of the following statements can be inferred? - More than one survey has been done. - Only 7% of the seniors have cheated on an exam. - It seems that more and more undergraduates admit to cheating. - Students are more likely to cheat in their senior year.
A: More than one survey has been done.

(Question)
Read the following article and select the best answer. Article: Housing Price in China has always aroused heated discussion among property developers and ordinary Chinese. To many property developers and local government officials, housing price in China is still low compared with many developed countries. However, the average housing price in the United States is only 8, 000 yuan per square metre, while in China, it is even higher than that in the United States. "This shows that there are some bubbles in Chinese real estate market," the International Finance News reported. Although the average price of residential houses in the United States, after changed to RMB, is about 8, 000 yuan per square metre, the houses in the US are not sold in terms of building area, as most Chinese property developers do when they sell their houses. If the US property developers sell their houses according to the building area, then the housing price will be even lower than 8, 000 yuan per square metre. In most big Chinese cities, such as Beijing, Shanghai and Shenzhen, houses are sold at a price even higher than those in the US. The high housing price in large cities in China proves that Chinese real estate market does have some bubbles. Moreover, Chinese houses cannot be compared with houses in the US in terms of building quality, environment and supporting facilities. Furthermore, it should be noted that American people's average income is several dozen times higher than that of Chinese people. How can the Chinese afford to buy a house which is even more expensive than that sold in the US? At the beginning of 2007, Chinese government issued a set of policies that aimed to benefit the public. Now in order to reduce the high housing prices, the government can regulate the real estate market by raising tax on property industry and controlling the release of loans and lands to property developers. Meanwhile, the government should allow people to build more houses through various fund-raising channels, such as funds collected from buyers or raised by working units. By applying these multiple... Question: What is the passage mainly about? - The problem of high housing price in China and possible solutions to it. - Different opinions on the problem of high housing price in China. - A comparison in residential housing price between China and the US. - The reaction of Chinese government to the bubbles in real estate market.
(Answer)
The problem of high housing price in China and possible solutions to it.