Read the following article and answer the question. 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 _ ? Answer:
OPTIONS:
- low level of intelligence
- a delay in learning how to speak
- understanding facial expressions
- making eye contact

Answer: low level of intelligence

Read the following article and answer the question. Article: Around twenty years ago I was going through hard times. I could not find a satisfying job. To my shame, I had to drive a school bus to make ends meet and lived in a friend's house. One afternoon, while driving through a quiet suburban neighborhood I was so sad that I kept asking myself "Why has my life become so hard?" "What's wrong with the world?" Then I pulled over the bus to drop off a little girl and as she passed she handed me a pretty earring, saying she found it on the floor of the bus and I should keep it in case the owner came to look for it. In the evening, the owner did come to look for her earring. When I handed it to her, she got very excited and continued saying "Thanks, you're a real gentleman." I told her that she should thank the little girl who had found it. She said, "Yes, and you are a good driver, too. What a lovely world it is!" Then she left with satisfaction. I was touched by her last words. I had thought something was wrong with the world just because of my poor condition. In fact, nothing was wrong with the world. I should change my attitude towards life. I should be positive about life. At first it was hard, and then it got easier. Every day I could find things to make me happy. Then one night there was a phone call for me at my friend's house from a lady who was a manager in a large hospital. She said she had read my application form and asked me if I would like to work in the hospital. I said yes and got the job. Looking back at the experience I know the most important is to have a positive attitude towards life. Question: The author decided to have a change in life because _ . Answer:
OPTIONS:
- what the earring owner said moved him
- he didn't want to be a driver any more
- his friends helped him become positive
- he was offered a better job in a hospital

Answer: what the earring owner said moved him

Read the following article and answer the question. 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: By saying "we're just scratching the surface right now", Cook means _ . Answer:
OPTIONS:
- they don't know much about China's market
- they will sell more products and gain more profit in China
- they need to obtain more permission from China's government
- they ignored the rural market in China

Answer:
they will sell more products and gain more profit in China