Robert wanted to do well in his exams．He spent all his free time studying．He wanted to be a scientist when he grew up．Unluckily,this meant that he was almost always serious．Although he was young，he didn't relax and enjoy himself．

    Robert's first important exam was coming soon．He had spent almost all the week preparing for it．He had got little sleep and felt very tired．However,Robert thought that he was ready for the exam．"I worked harder than anyone else．I'm▲I will get a good mark，"he thought during the breakfast．

    After breakfast．he started to feel a little ill．He also had a little headache and found it difficult to concentrate (专心)．But he refused(拒绝)to believe that he'd fail (不及格)the exam．Robert arrived at the school hall and took his chair．He noticed how relaxed and happy his friends looked．

    "They are just under prepared(准备不充分的)，"he thought as the exam began．

    Unluckily,Robert wasn't able to finish his exam．Twenty minutes after the exam started，he felt very hot and uncomfortable．He then slumped(瘫倒)in his chair,and one of his friends called for help．His teacher took him to the school hospital at once．In the hospital，the doctor told him that he was too tired to finish the exam．

He spent the lunch break in the nurse's office．

    He spent the lunch break in the nurse's office.He looked outside and watched his friends.They were playing happily．Robert decided that from then on,he wouldn'-t take it all so seriously．

    "A balanced (平衡的)life is more important．I guess I know what to do next time，"he thought．

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