根据短文内容， 从下框的A-F选项中选出能概括出每段主题的最佳选项。选项中有一项是多余项。

A．Show a positive attitude B．Signs of being under stress C．Encourage your teen to relax D．Help your teen get organized E．Give your teen a nutritious diet F．Spend your more time with your teen

 How to Calm Your Teen’s Nerves before an Exam
Stress is a feeling of physical and mental of emotional tension, which disturbs normal physiological（生理的） balance．It can be especially difficult for a teen．A major source of teen stress is school exams，and test anxiety is not uncommon．
Teens can feel a great pressure to do well on exams．For some teens，just the idea of taking the test can bring them into a panic．Physical symptoms of stress and anxiety include：lack of sleep，difficult breathing，loss of appetite or irregular eating．Emotional symptoms include：excessive（极度的）uncontrollable feelings，mood swings，expressions of despair，hopelessness，or panic attacks．
With teens, parents should watch for stress-related behaviors．Parents need to be involved in their teen’s work． What they look for is your presence—to talk, or simply to sit with them quietly．Communicate openly with your teen．Let your teen express his／her worries and fears．
With today’s heavy homework loads，time-management and organizational skills are good weapons against stress． Teach kids to budget their time wisely with homework．Try to do something every night instead of cramming at the last moment．Sometimes you Can even help your teen find his／her weakness in studies．Therefore，your teen can think about what he／she has to study and plan accordingly．Together， you and your teen can work out a timetable in which he／she can study for what he／she knows will be on the test．
It’s important for your teen to eat a healthy，balanced diet during exam times to focus and do his／her best．Exam stress can make some teens lose their appetite．If this happens，encourage your teen to eat light meals or sandwiches． A healthy diet，rather than junk food，is best for reducing stress．
A parent’s attitude will affect their teen’s emotions．If you panic，blame，or apply to much pressure，your teen will have an unusual increase in their stress levels．Make your teen feel accepted and valued for his／her efforts．Most importantly，calm your teens that things will be all right, no matter what the results are．