I'm taking a test and have to guess the right answer to the question after the article. Article: Have you ever wondered why birds sing? Maybe you thought that they were just happy.After all,you probably sing or whistle when you are happy. Some scientists believe that birds do sing some of the time just because they are happy.However,they sing most of the time for a very different reason.Their singing is actually a warning to other birds to stay out of their territory Do you know what a "territory" is? A territory is an area that an animal,usually the male,claims as its own.Only he and his family are welcome there.No other families 0f the same species are welcome.Your yard and house are your territory where only your family and friends are welcome.If a stranger should enter your territory and threaten you,you might shout.Probably this would be enough to frighten him away. If so,you have actually scared the stranger away without having to fight him.A bird does the same thing. But he expects an outsider almost any time,especially at nesting season.So he is screaming all the time,whether he can see an outsider or not This screaming is what we call a bird's song,and it is usually enough to keep an outsider away. Birds sing loudest in the spring when they are trying to attract a mate and warn others not to enter the territory of theirs. You can see that birds have a language all their own.Most of it has to do with attracting mates and setting up territories. Question: Some scientists believe that most of the time birds' singing is actually. Options: A: an expression of happiness B: a way of greeting C: an expression of anger D: a way of warning
D
I'm taking a test and have to guess the right answer to the question after the article. Article: People in Shanghai can quench their thirst with high quality water if the Shanghai Water Authority (SWA) is able to make good on its word. It has vowed to make the city's water match its status as a world class city. "The current tap water quality meets national standards, but, compared with that of the European Union and the United States, it still needs to be improved." said the SWA's director general, Hang Jiayi. In other developed countries, water fountains can be found almost everywhere--people do not bother with bottled drinking water. By 2020, the water of the Huangpu River will be treated to reduce the amount of organic waste in it. Major water works that draw water from the Huangpu will need more treatment facilities to improve the colour, texture, ammonia and nitrogen content before 2010. These treatment facilities are expected to cost 4 billion yuan, something that could affect the price of water, according to Chen Yin, SWA's deputy director general. Chen said that replacing water pipes was also a key project. The city's aged pipes are mostly to blame for the bad water quality. The SWA has started the water facilities renovation work, including the more than 14,000 kilometres of indoor piping, 107,000 tanks on top of the buildings, and more than 6,000 underground facilities. World Water Day came on March 22, and this year's theme is "Water for the future". Beijing is also drawing up plans during China's Water Week, which runs until March 28. By 2010, the water for the Shanghai EXPO is to be above World Health Organization standards. And, the people of Beijing will be able to drink their tap water as well. Question: What is the main idea of the passage? Options: A: The cost of treating the tap water. B: How to reach the water standards of developed countries. C: The project for making tap water drinkable in Shanghai and Beijing. D: The progress of treating the water of Huangpu River.
C
Q: I'm taking a test and have to guess the right answer to the question after the article. Article: When we meet another person for the first time, we are actually flooded with new information. Almost at once, we notice his appearance, style of dress, and manner of speech. Furthermore (besides), as we listen to what he has to say and observe the things he does, we begin to form some ideas of what kind of person he is and what he intends to do. As you know from your own experience, though, we do not only gather these separate pieces of information. Instead, we go further and combine them into a unified picture. In short, we form an overall impression of each person we meet--an impression that can be favorable (making people like) or unfavorable. But how precisely (exactly) do we perform this task? How do we combine so much different information into a clear first impression with such quick speed? A great deal of research has been performed on this question, and results point to the following answer: we perform this task through a special type of averaging . Expressed very simply, our impressions of others seem to represent a weighted average of all information that can be gathered about them. That is, they reflect a process in which all information we have about others is averaged together--but with some facts, or input receiving greater weight than others. As you can readily see, this makes good sense. For example, in forming an impression of a new boss you would probably be affected to a much greater degree by how this person gives you orders (whether respectfully or not) than by the color1 of his or her eyes. The fact that not all information about other persons affects our impressions of them to the same degree, raises an important question. Just what kinds of input receive the greatest weight? Again research provides some revealing answers. Question: Research has shown that first impressions are generally more affected by _ . Options: A: the way others speak B: appearance and style of dress C: all information we have D: certain types of information at hand
A: D
Q: I'm taking a test and have to guess the right answer to the question after the article. Article: On Friday, Japanese researchers announced a population clock that showed a dangerous situation that the Japanese nation would disappear in 1,000 years if the falling birth rate kept the present level. Researchers in the northern city of Sendai said that Japan's population of children aged up to 14, which now stands at 16.6 million, was falling at the rate of one child per 100 seconds. It would lead to a terrible result that there would be no children left in Japan in 1,000 years. "If the rate keeps falling at that rate in our country, there will only be one child who is able to enjoy the following Children's Day left on May 5th, 3011," said Hiroshi Yoshida, a professor at Toholu University. "But 100 seconds later, a national disaster that there are no children left in Japan will happen," he added, "The nation's people will disappear for the birth rate has fallen to the level that every woman has no more than two children, which started in 1975." Yoshida said they created the population clock to make Japanese people pay close attention to that problem for their nation's future. Another study showed that Japan's population was expected to fall to one third of the present population amount: 127.7 million in the next century. The Japanese government predicted that the birth rate would just become 1.35 children per parents within 50 years. At the same time, Japanese life expectancy which is expected to ascend from 86.93 years in 2010 to 90.93 years in 2060 for women and from 79.64 years to 84.19 years for men has already been one of the highest in the world. More than 20 percent of the Japanese are aged 65 or over. It means that Japan has become one of the countries with aging populations in the world. The problem of aging populations is a headache for the government and the Japanese economy because there are fewer and fewer workers who can make money for the country. However, the government has to face the terrible situation that it needs to offer a growing number of pensions. Question: Why did researchers think Japanese people would disappear in 1,000 years? Options: A: Because the Japanese are afraid of the changing environment. B: Because Japan will be destroyed by a serious earthquake. C: Because the birth rate of the nation is at a very low level. D: Because the country will sink in the Pacific Ocean gradually.
A: C