AEvery year at the start of a new school year, college freshman are occupied in dealing with the enrollment procedures and settling themselves in their new dormitories. Their parents, the superprotective Chinese ones, will always follow their children everywhere , anxious and worried.However, the new policy of Tsinghua University this semester is sending a message: boys and girls, its time to become independent.On movein day, a tallow line was drawn across the entrance of school area, separating parents from their children. The students themselves had to spend about three hours registering and finding their dormitories.By doing this, the university is asking students to“start this new adventure by standing on their own feet”， said Chen Jinjing， president of Tsinghua。Following Tsinghua, other university have also made policies to encourage students to enroll alone.Oujiang College ,at Wenzhou University in Zhejiang ,has opened an online platform for freshmen to contact senior schoolmates who can guide them on enrollment day .Renmin University asked senior students to return to their hometowns and accompany freshmen to school.This change has excited many freshmen. Li Ming, a Tsinghua freshman from Gansu province, took a train to Beijing with only one schoolmate .“Its my first long trip without my parents, and I am quite excited about it,”he said. “Coming to the university begins a new stage of my life, and I should learn to take care of myself from the start. ”Although some say such policies are not enough to make students independent, many believe it can help start to change the situation. “Such campaigns help students realize they have to live on their own ,” said Xiong Bingqi, vice-president of the 21st Century Education Research Institute.“The lack of independence has been a major concern for kids born in the 1990s, as parents arranged everything, which hampered (阻碍) childrens all-around development.”Xiong added.21.From the passage we can infer that_. A.all universities dont require their freshmen to enroll themselves B.all freshmen of Tsinghua are excited by the policy C.Li Ming, delighted by the policy , went to Tsinghua alone D.senior students from Oujiang College should accompany freshmen to school22.If you are a freshmen of Renmin University, _. A.settle in your dormitory with the help of your parents B.travel to the university all by yourself C.a senior student may return to your hometown and accompany you back school D.finish registering alone 23.The underlined word “this” in Paragraph 4 probably refers to _. A.encouraging freshmen to study hard and set a new goal. B.requiring freshmen to enroll and settle themselves in dormitories alone C.drawing a yellow line to protect the freshmen D.separating freshmen from their friends and classmates24.According to Xiong Bingqi,_. A.the policy can help parents realize their mistake that they make their children independent B.parents are so concerned about kids born in the 1990s that they wont let children go anywhere C.childrens lack of independence lead to their being lacking in all-around development D.Chinese parents do everything for their children, thus holding back their childrens all-around developmentB In the process that parents help kids to develop language and speech skills, listening to what they have to say is just as vital as talking to them, the researchers say. The influence of a conversation between a child and an adult is about five times as great as that of adult speech input alone,according to the researchers findings. “Adults speaking to children helps language develop ,but what matters much more is the ineraction.”said the studys lead author, Frederick Zimmerman, an associate professor in the School of Public Health at the Universaty of California,Los Angeles. The researchers also found that TV viewing didnt have much of an effectositively or negativelyas long as it wasnt replacing conversations between an adult and a child.The study included 275 families with children between 2 months and 48 months old. They represented a variety of incomes and education. The researchers found that , in an average day , children hear about 13,000 spoken words from adults and participated in about 400 adult-child conversations a day.Assessed separately, factors positively associated with language development included each additional 100 conversations a day and each 1,000 word increase in the number of words spoken by adults and heard by children. When locked at home alone,TV was negatively associated with language development. But ,when the three factors were analyzed together, the only one that stood out was conversation between adults and children.“The more a child speaks and interacts with an adult , the better idea a parent has about where the child is.” Zimmerman said, “Although its mostly