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... Which is NOT the Common signs of autism _ ? A) low level of intelligence B) a delay in learning how to speak C) understanding facial expressions D) making eye contact
A
How many words one uses cannot be measured exactly. However, Professor Seashore concluded the first- graders entered school with at least 24,000 words and add 5,000 each year so that they leave high school with at least 80,000. These figures( ) are for recognition vocabulary ,the words we understand when we read or hear them, which are more than our active( ) vocabulary, the words we use in speaking and writing. Using the words you recognize in reading will help get them into your active vocabulary. In your reading, pay attention to these words, especially when the subject is one that you might well write or talk about. Underline (draw a line under) or make a list of words that you feel a need for and look up the ones that you are not sure of in a dictionary. And then before very long you will find a way to use some of them. Once you know how they are pronounced and what they mean, you can safely use them. One way suggested by the writer to increase our active vocabulary is that we should _ . A) look up a dictionary for more new words and keep them in our note B) read and recognize the words we will need and add them into our list of active vocabulary C) keep well in touch with more recognition words and keep using them after knowing their pronunciation and meaning. D) read more , write more and use more
C
Q: Not long ago, people thought babies were not able to learn things until they were five or six months old. Yet doctors in the United States say babies begin learning on their first day of life. Scientists note that babies are strongly influenced by their environment. They say a baby will smile if her mother does something the baby likes. A baby learns to get the best care possible by smiling to please her mother or other caregiver. This is how babies learn to connect and communicate with other human beings. One study shows that babies can learn before they are born. The researchers placed a tape recorder on the stomach of a pregnant woman. Then, they played a recording of a short story. On the day the baby was born, the researchers attempted to find if he knew the sounds of the story repeated while in his mother. They did this by placing a device in the mouth of the newborn baby. The baby would hear the story if he moved his mouth one way. If the baby moved his mouth the other way, he would hear a different story. The researchers say the baby clearly liked the story he heard before he was born. They say the baby would move his mouth so he could hear the story again and again. Another study shows how mothers can strongly influence social development and language skills in their children. Researchers studied the children from the age of one month to three years. The researchers attempted to measure the sensitivity of the mothers. The women were considered sensitive if they supported their children's activities and did not interfere unnecessarily. They tested the children for thinking and language development when they were three years old. Also, the researchers observed the women for signs of depression. The children of depressed women did not do as well in tests as the children of women who did not suffer from depression. The children of depressed women did poorly in tests of language skills and understanding what they hear. These children also were less cooperative and had more problems dealing with other... What is the main idea of the passage? A) Scientific findings about how babies develop before birth. B) Scientific findings about how the environment has an effect on babies' intelligence. C) A study shows babies are not able to learn things until they are rice or six months old. D) Scientific findings about how intelligence develops in babies.
A: D
*Question*
Luo Jingyu, 19, has four years of experience of running business. He is also a freshman in the arts department of Hubei University. Luo Jingyu is from an ordinary family. He said, "My parents told me if I wanted something I should make an effort to get it, so I earned pocket money by doing housework when I was little." The dream of running his own business grew in his heart. He said, "I want to be a successful person, like Alibaba's Ma Yun." When Luo was a junior student, he had the idea of selling lanterns when he saw many people flying Chinese lanterns in a square. Luo bought some lanterns from a store, but the sales were not as good as he had expected. Then he found another way to do business. He bought lanterns on the Internet at a very low price. Finally he easily made 5,000 yuan in two days. With a happy beginning, Luo planned to open a dress shop. "My parents didn't support me opening a dress shop, so I had to borrow 120,000 yuan for it." Although he did market research before starting, the business wasn't very good because his taste in fashion wasn't accepted by customers. The shop eventually closed down after half a year. After experiencing a big loss, he decided to do something he was familiar with --- selling painting tools. As a fine arts student, he knew the market. He convinced his friends to invest one million yuan in his shop. With a good business mind and a lot of effort, the sales of the shop reached six million yuan in a year. Even though Luo is rich, he uses a cheap cell phone and does not wear luxury clothes. He has a simple lifestyle. "It isn't easy to make money, so money should be used on something worthwhile," he said. Why wasn't the dress shop successful? A) He had to prepare for his exam. B) The dresses he bought weren't of high quality. C) Customers didn't accept his taste in fashion. D) He didn't have enough money to buy beautiful dresses.
**Answer**
C