Questions 1~5 are based on the following passage:Attention -deficit disorder (ADD) happens with about 5% of children in school. These children show signs of not paying attention or doing things without thinking first. They may not be able to follow more than one direction at a time. Their actions can be quick and they talk like they are in a hurry. Doing these things is called “being hyperactive .” Many of the children who are looked at for ADD seem hyperactive. They tend to bother other student s at the wrong times. Sometimes a child with ADD is labeled as lazy, excited, or a trouble maker. Many times the problem is not their fault and they can not control it. About half of the children with ADD usually stop their ADD behavior by the time they be come an adult. Those that do not lose their ADD behavior continue to have a hard time staying on one task for very long. There are many reasons why a person may have a hard time focusing on a task for very long. A doctor will need to see or hear about how the person acts in a lot of different places. The medical history of the person is important, too. There are tests that can be given to help in seeing if the person has ADD. Sometimes medicine can help a person with ADD. It can help the person to focus on a task longer and to cut down on responding to distractions. The medicine must be given by a doctor and the person with ADD carefully watched to see if the medicine is helping. Which of the following is NOT a sign of ADD children？ A．Not focusing on what they are doing. B．Ta lking like they are in a hurry. C．Thinking twice before taking action. D．Following one direction at a time.