Read the article and select the best answer. Article: The general objective of public interest advertising is to inform, persuade, or remind people about the particular idea, cause, or philosophy being advertised. This kind of advertising is often used by non-business institutions, such as schools, hospitals and charity organizations. We also see advertising by associations. In addition, we witness millions of dollars' worth of advertising placed by government organizations. Much government advertising announces the availability of such valuable government services as consumer assistance, welfare aid, or career guidance. However, with the resource available to it, the government can also use advertising techniques for propaganda purposes. Many state governments use advertising to attract new businesses, tourists, or workers to aid their economy. Because of the fact that public interest advertising is nonprofit, the words it uses are much more different from the other 3 kinds of advertising. Its purpose is not to urge readers to spend their money, but to disseminate a kind of concept or advocate a social ethic. The headline of public interest advertising also acts as a role of attraction. The average words of them are 10.6, and most of them are curious headlines (60%) and emotional headlines (30%). We can know from the statistics that attracting the reader is still a main task for the headline of public interest advertising, because only when the readers feel the advertising will benefit them (no matter physically or mentally) should they have the patience to read it further--that's the rule of all the advertisements. I also notice that only 10% of those advertisements include their advertiser's brand, which shows that the public interest advertisements do not aim to propagandize any company or organization. Straight-line body copy is the most frequently used form--which is 50% of the 20 ads. 75% of those ads have used imperative sentences. Most of these sentences are urging readers to take action immediately for others or social ethics. All these data show the... Question: Governments spend millions of dollars on advertisements mainly to _ . Options: A: promote special produce or business B: show mercy on less developed organizations C: spread a kind of concept to the public D: give away money to charities and schools
C

Read the article and select the best answer. Article: In October on the east coast of Australia migrating humpback whales pass very close to the shore. With the help of Max Egan, we went to film them near Byron Bay. It was extremely exciting to spot the little puffs of spray on the horizon. When migrating, the whales can be traveling at speeds of about 12km/h and can dive under anywhere between five and forty minutes, but with many years of experience Max usually guided our boat to exactly the right place to provide us with amazing sighting. As the whales break the surface like submarines , the water spills off their broad dark backs and huge tails. Then, with a powerful down stroke, they dive back into the depths of the sea, leaving just a smooth glassy patch of water or "footprint" on the surface to show where they had been. One day we had traveled up and down the shore and far out to the sea in search of whales, but the horizon was deserted. There was no report of whales in the area so we decided to test out Max's new, highly sensitive hydrophone and the result was astonishing. As soon as the hydrophone was in the water, we found ourselves listening to the most beautiful voices. What may have seemed like a vast empty ocean was filled with the singing of whales. It is the males which sing, as they migrate between feeding and breeding grounds. No one knows for sure what the purpose of these songs is, whether they are love songs to the females or warnings to other males to stay away. It was thought that each population of humpbacks had its own song which remained regular but recent findings suggest that the whales appreciate a memorable tune and quickly adopt any new songs they hear. Question: Which finding about whales is beyond the writer's expectation? Options: A: The little puffs. B: The songs of whales. C: The traveling speed of whales. D: The depth of the whale's dive.
B

Read the article and select the best answer. Article: Cellphones: is there a cancer link? Could your cellphone give you cancer? Whether it could or not, some people are worrying about the possibility that phones, power lines and wi-fi could be responsible for a range of illnesses, from rashes to brain tumors. Some say there is evidence to support the growing anxieties. David Carpenter, a professor of environmental health sciences at the university at Albany, in New York, thinks there's a greater than 95 percent chance that power lines can cause childhood leukemia . Also there's a greater than 90 percent chance that cellphones can cause brain tumors. "It's apparent now that there's a real risk," said Carpenter. But others believe these concerns are unjustified. Dr Martha Linet, the head of radiation epidemiology at the US National Cancer Institute, has looked at the same research as Carpenter but has reached a different conclusion. "I don't support warning labels for cellphones," said Linet. "We don't have the evidence that there's much danger." Studies so far suggest a weak connection between EMFs and illness -- so weak that it might not exist at all. A multinational investigation of cellphones and brain cancer, in 13 countries outside the US, has been _ for several years. It's funded in part by the European Union, in part by a cellphone industry group. The final report should come out later this year, but data so far don't suggest a strong link between cellphone use and cancer risk. Question: From the passage we can learn that some people are worried because _ . Options: A: they have evidence the use of cellphone can lead to cancer. B: they make a fuss over cellphone use. C: some expert has given a warning. D: cellphones are responsible for brain tumors.
C