根据首字母、汉语提示及句意补全单词。

1. Bob can make us laugh, and he is f         than anyone else.

2. My sister doesn't like to talk with others. She is q                 

3. Some friends have o        views and interests.

4．It is         (重要的)for us to help others,

5．A good friend should be      (受欢迎的)in school.

除另有规定外，含量均匀度的限度是

A．15%
B．20%
C．10%
D．25%
E．30%