下面是某实验小组的同学所做的“探究导体中电流与导体电阻的关系”的实验．

— Yes. Our teacher often tells us we can't be _______ careful while taking exams.

    All of us know that breakfast is very ____ 'nesəsərɪ to us. It is____of the most important meals of the day. To keep ____ (health), everyone should have a good breakfast.____ (eat)the right food is good for our health. We can have eggs, bread, milk and other food ____ breakfast.

    Many students go to school without breakfast.____  bɪ'kɒz they get up late or their parents don't cook for them. It's ____ for their health.

    Without breakfast children may not____grəʊfast and may not study and play very well at school. They may be easier to get____(ill). And when they're ill, it will____(take) them a long time to recover（恢复）. I think everyone should have some good eating habits.