Article: Autism spectrum disorder is a developmental disability. People with autism have trouble communicating and with social skills. The U.S. Centers for Disease Control and Prevention says the person also might repeat some behaviors and not want change in their daily activities. Some people with the condition need a lot of help. Others need less. CDC officials say autism affects one in every 68 children in the United States. More boys than girls are believed to have the condition. But the number of cases appears to be growing. It is unclear whether the growing number shows a real increase or comes from more knowledge about this disorder. Symptoms of autism Common signs of autism include trouble making eye contact and a delay in learning how to speak. Some people with severe autism never learn how to talk. Many people with autism also have difficulty understanding facial expressions and the feelings of others. They also have trouble making friends of the same age. Doctors have learned how to recognize autism, but much is still unknown about its causes. Researchers at Harvard University have come closer to finding answers. They found that women exposed to the highest levels of fine particulate air pollution late in their pregnancies are two times more likely to give birth to a child with autism. The findings appeared in Environmental Health Perspectives -- a publication of the National Institute of Environmental Health Sciences. The study found that the women who were around high levels of fine particulate matter air pollution were at highest risk of having an autistic child. The increased risk of these women was two times that of women who lived in areas with low levels of fine particulate pollution. The researchers found that the timing of exposure to pollution was important. They found no increased risk of autism in children whose mothers were around high levels of pollution before becoming pregnant. And the study found air pollution does not seem to increase the risk of children developing autism after they are... Question: Which is NOT the Common signs of autism _ ? Yes or no, is the answer "low level of intelligence"?
Yes

Article: The Ministry of Education in Singapore is releasing a new book this month that summarizes the thinking behind the model method for teaching math.The approach has drawn interest from many comers of the world thanks to the country's top performance on international exams.Last night, education officials and researchers from the US and Singapore highlighted some key differences between the two systems. Singapore's method is highly visual and explores fewer topics, but in greater depth.While Singapore's text books have an average of 34 lessons with 15 pages of explanation for each, much bulkier texts in the US include an average of 157 lessons, with about four pages of explanation per lesson.There arc some more surprising differences. Professional development is intensive for all teachers in Singapore, but strangely about half of the elementary teachers do not have university degrees.That is certain to change, though, as education standards for entering teachers are increasing, said Madame Low, the director of curriculum, planning and development with Singapore's Ministry of Education." Starting salaries for math teachers match public sector accountants or engineers.Teachers are treated as professionals," added Madame Low. Mentoring programs for new teachers in Singapore last five years! Teacher evaluations there are extremely comprehensive, and teachers who succeed receive bonuses worth one to three months of salary.Grades one and two have smaller class sizes--only 30 students.Students are taught in English, not their native tongue.Many are bilingual or trilingual. People often ask, how applicable is a successful model in Singapore to the more diverse and much larger US? I'm also interested in the practical challenges.Given that books in the US are written with state standards and assessments in mind, matching them up with another country's approach might be tough. What do you think? How applicable is a successful model in Singapore to the US? Question: By asking a question at the end of the passage, the author _ . Yes or no, is the answer "welcomes discussions on the US adaptation of Singapore methods"?
No

Article: BEIJING--Apple Inc is one step closer to beginning sales of iPad2 tablet computers with cellular network compatibility for the first time in the Chinese mainland, where the consumer-electronics giant is _ an aggressive expansion. According to China's Telecommunication Equipment Certification Center, a device by Apple with third-generation high-speed wireless data capabilities was issued the network access license needed for the company to begin official sales in China.The device, listed under model number "A1396", is compatible with the 3G standard WCDMA, and would work with the cellular network operated by Apple's local iPhone partner, China Unicom (Hong Kong) Ltd. China Unicom declined to comment. Apple already offers the 3G iPad2 in Hong Kong through its partners, but currently only offers Wi-Fi versions of the device in the Chinese mainland.Still, consumers in China, which according to research firm IDC surpassed the US as the world's largest PC market in the second quarter, have been purchasing 3G tablets through unofficial channels. Separately, Apple spokeswoman Carolyn Wu said Sept 6 that the company's first Hong Kong store, set to open this quarter, will be located in the city's central shopping and business district in the International Finance Center's upscale IFC mall, a commercial center and sightseeing spot along the city's waterfront.Wu also said that Apple is planning a new store in Shanghai later this quarter, which will be its biggest store in China.She declined to give more details or to comment on the 3G iPad2. Apple currently has four full-service Apple stores in the mainland, which receive the most traffic of any Apple stores in the world.The company otherwise relies on resellers to get its products into the market. The new stores reflect Apple's confidence in rising demand for its products such as smart phones and tablet computers.Sales in the Chinese mainland, Hong Kong and Taiwan helped boost the company's third-quarter results, newly appointed Chief... Question: How many full-service Apple stores in China? Yes or no, is the answer "Unknown."?
No