阅读理解。 In the United States, parents usually encourage their children to develop their potential (潜能). They pay attention to what their kids can do, not what they can't. As a result, US boys and girls hope to be actors, athletes and doctors; many even want to become presidents when they grow up. US parents often encourage their children to take part in all kinds of activities at school. They believe that joining in these activities can make their children mature (成熟). Schoolwork is important, but they think that social skills are important as well. But things in China are different. Chinese parents often tell their children to study hard and pass exams. They think that, for a student, staying away from schoolbooks means wasting time. This puts a lot of pressure on Chinese students, so leaders in China's education department have called for less homework at the lower grades. Only healthy kids can become healthy adults. 1. American parents think that _______.  A. Schoolwork is as important as social skills  B. Schoolwork is more important than social skills  C. Schoolwork is less important than social skills  D. Passing exams is the most important for their children 2. Why do many American children have their dream jobs?  A. Because they start school earlier than Chinese children.  B. Because they study hard.  C. Because their parents encourage them to do less homework.  D. Because their parents usually pay attention to what they can do,not what they can't. 3. Chinese parents think that _______.  A. taking part in all kinds of activities at school can make their children mature  B. staying away from schoolbooks means wasting time  C. their children should do what they want to do  D. social skills is necessary for the students at lower grades 4. According to this passage the writer thinks _______.  A. China's education is better than America's  B. America's education is better than China's  C. Chinese students at the lower grades should have more homework  D. Chinese students have less pressure than America's