根据短文内容和所给汉语提示，写出短文空白处各单词的正确形式。每空限填一词。

When many people from  小题1:(另外) countries come to America for the first time, they meet many 小题2: (困难). They can't speak much English, and they don't know  小题3:(多)about America. Sometimes, they make mistakes.

Sally came to America from Korea小题4:(年) ago. Because her English   小题5: (不)good, she was afraid to ask the  小题6:   (路). So she usually couldn’t find the places in America. Then she hoped she could see something that she knew, but she couldn' t. Then she began to cry and miss her    小题7: (自己) country because she never had this kind of problems in Korea. She could find the places  小题8: (轻松) in Korea.

Little Henry came to America from Thailand with many people ,  小题9: (包括)his parents.He didn' t know how to put the money into an American bank at first. When he grew older and knew more English, he finally  小题10:  (成功)in putting the money into an American bank .

某住宅小区在业主委员会成立后，选聘甲物业公司对其进行管理，并与甲物业公司签订了为期2年的物业服务合同。1年后，小区业主认为甲物亚公司处理问题不及时，不能满足他们的利益。于是，小区业主自行组织选举产生业主代表，业主代表选择了乙物业公司，提前解除了与甲物业公司的服务合同，强迫甲物业公司撤离小区。

问题

1.甲物业公司与业主委员会签订的合同属于什么性质的合同？

2.小区业主的行为是否正确？说明理由。

3.业主委员会的职责有哪些？

4.假如经业主大会2/3以上投票权业主投票决定，业主大会可否解除与A物业公司的物业服务合同？