先通读下面的短文，掌握其大意，然后根据短文内容和所给首字母，在空格内填入一个适当的词，使短文意思完整，所填单词在题后横线上必须完整写出。
Japanese people often ask people what blood group they are. This is b 1 they believe that a person’s blood group says a lot about their character and personality. The Japanese also believe that k 2 blood group can help them decide that if a person will be a person’s good friend. It is strange that this idea is so popular in Japan because it is not a traditional idea, but a m 3 one. Blood groups were only d 4 in 1901 and in 1916 a Japanese doctor suggested that blood groups were related to temperament (气质、性情).
In 1927, a writer did a large study of people and wrote a guide to blood groups. He said that people from blood group O are calm, patient and in c 5 of their emotions (情绪). They are f 6 of self-confidence but are also quiet. People from blood group A are gentle and careful, worry a lot, find it hard to make a d 7 , and do not like arguments. People from blood group B are cheerful and “independent”(独立). They can talk and do things w 8 needing help from others. Blood group AB is quite a strange group. These people may seem like people from blood group B but they are actually more like people from blood group A. They are shy and confident, trustworthy (可信赖的) and like to help others. The Japanese also think that your blood group a 9 your choice of job and even your choice of m 10 partner!
；②C物质苯环上一卤代物只有两种。
