Everyone, rich or poor, can have happiness. You don't need to think too much about those 1 people. They may always feel lonely (孤独的) 2 their houses are too big, and they may want to take a 3 on country roads because they drive to work every day in the busy city.

    4, happiness is always around you. When you are unhappy, your friends will come to   5 you and this will make you happy. When you study hard at your lessons, you will get good marks and of course you will 6 happy about it. If you don't feel 7, your parents will take good care of you and you will be happy. When you are 8, you can also say you are happy because you may have something else that money can't buy. When you 9 problems, say loudly that you are happy because you have 10 chances to challenge (挑战) yourself. Then you can succeed (成功) in what you do and this may bring you happiness.

下面是人体三种血细胞主要特征的比较表，请结合情境回答以下问题：

（1）请将表格内的比较项目补充完整．

（2）李明最近表现出精神不振、头晕、面色苍白等症状，去医院检查时进行了抽血化验，抽血时选择的血管是____  ．

（3）血液化验单显示李明红细胞中血红蛋白的含量过低，说明李明可能患____  ，医生建议他注意饮食营养，多吃一些含____ 丰富的食物．血液化验单还显示李明的白细胞数量过多，说明他体内可能有____．

（4）李明的血液中葡萄糖含量偏高，检查尿液发现有葡萄糖，这可能是他体内____ 分泌不足导致的．