user: Ques: Article: 66-year-old Dai once worked as a boat tracker along the Yangtze River. "It was something that required brute strength,but not that alone, "Dai said at his home in Xialong village, which sits at the entrance to Wuxia Gorge, one of the famous Three Gorges in Southwest China. "You needed a lot of skills to do what we did." When outboard motors became available in the 1980's,boat trackers became a thing of the past. Today, they are seen only occasionally along the river during festivals and cultural events. However, Dai can still remember a time when being pulled by tracker along the Yangtze was the only way for people to travel from village to village in the mountainous Wushan county. Due to the area's rich mining resources,his services were vital for companies that wanted to ship their goods. "I was 15 or 16 when I started", said the retiree,explaining that his father also worked as a tracker. "He died in 1964, when I was a teenager. I can't even remember us tracking together, but we did. It was so long ago." Dai said that boats crews worked in teams with a first, second and third master. The first master was the most essential because he sat in the boat and steered   it along the safest route. "It was a key role. He had to guide the boat past jagged rocks and whirlpools," he said, adding that first masters were often the most experienced boatmen and the most familiar with the Yangtzer River. "My tracker days were dangerous," Dai said. "If the boat got caught in a whirlpool, it could have swallowed the boat and all the trackers down with it. The same thing would have happened if the halter   broke." Dai's days as a tracker finally came to an end when his family invested in a motorboat in the early 1980s. He successfully applied for a license from Wushan shortly after. Question: From the passage we can know that   _  . Yes or no, is the answer "being a tracker required more than brute strength"?
Ans: No

Ques: Article: Climate change could affect food supplies, water resources, human health and homes. If greenhouse gas emissions keep increasing at the current rate, global temperature is expected to rise between 2degC and 6degC by 2100. This doesn't sound much, but a 5degC change is the difference between the current warm period and an ice age. Global warming leads to other changes in the climate: melting ice, more evaporation , changes in geographical patterns of rainfall, heavier downpours separated by longer dry spells, more frequent heat waves, more intense hurricanes, and sea level rise. These changes could affect crop growth as drought, increased evaporation and shrinking glaciers disrupt water supply. Some crops could suffer heat stress. While there may be benefits in some regions, overall climate change is likely to have a negative impact on global food supplies. The impacts of climate change on agriculture will vary widely around the world. A global temperature rise of 1-2 degC is expected to increase food production in some regions, particularly mid-latitude areas. But in tropical regions even a small amount of warming could reduce crop yields. A temperature rise of 3 degC or more could threaten global food resources, as all regions are likely to experience negative impacts overall. Freshwater resources could also diminish, especially in tropical regions, as rain patterns change and evaporation speeds up. Some communities could lose essential melt water as glaciers disappear, while more intense rainfall and hurricanes could cause more flooding, leading to water pollution and bacterial diseases such as cholera becoming more widespread. Climate change could lead to a variety of health impacts - both positive and negative. On the negative side, scientists anticipate more cases of malnutrition, heatstroke and waterborne diseases such as cholera. Although some populations will benefit from a reduced risk of cold-related illnesses such as _ , overall a warming world is likely to have negative effects on human... Question: The passage is mainly meant to tell us   _  . Yes or no, is the answer "how climate change affects people worldwide"?
Ans: No

Ques: Article: Sir, In reply to your advertisement in today's China Daily regarding a vacancy in your office, I wish to apply for the position of senior clerk, which you have specified.  I feel sure that I can meet your special requirements that the candidate must have a high command of English, for I graduated from the English Language Department of Wuhan University three years ago. In addition to my study of English in the university, I have worked for three years as a secretary in the firm of ABC Trading Co. Ltd. The main reason for changing my employment is to gain more experience with a superior trading company like yours.I believe that my education and experience will prove useful for work in your office. I am enclosing my resume, certificate of graduation and a letter of recommendation from the president of the university.I shall be obliged if you will give me a personal interview at your convenience. Very truly yours,                                                             Li Mei Question: Why does the author want to change his job? Yes or no, is the answer "To gain more working experience."?
Ans: No

Ques: Article: A 1. 6-meter tall robot may soon become the best friend for lonely elderly people,as Chinese scientists are making the final sprint toward its market launch ,said a senior researcher on the robot project on Saturday.      "We are working on testing the exact functions and ways to reduce the cost in preparations for an expected market launch of the robot in two to three years,"said Li Ruifeng,a member of  the project.        He said the team hoped to reduce the cost so that the robot can be priced at 30,000 to 50,000 yuan,which is expected to be an affordable price for most of China's better-off families.      The robot has been developed with the functions of fetching food,medicine,sounding alarms in case of water or gas leakage,sending texts or video images via wireless communications,and even singing a song or playing chess to entertain its masters.      Li said that the robot,developed independently in China, has technology at the same level as those in western labs.          China set about the research of the robot in 2007,when it was listed as a national key project. It is  _ by government funding . China has the world's largest elderly  population with 159 million people over 60,accounting for 12 percent of its total population.  According to a survey by the Ministry of Civil Affairs,more than 10 million caregivers and nurses are needed to attend the elderly population,as most of Chinese elderly prefer to live their retired lives at home. Question: Which of the following is true according to the passage? Yes or no, is the answer "Robot caregivers will appear in the market in 2 or 3 years."?
Ans:

assistant: No