简述要约与要约邀请的区别。

Lucy and Kate are English girls. They are twins(双胞胎). They are studying Chinese in Beijing now. They are in Miss Gao’s class. In their class, there are fifty-two students. There are twenty-eight boys and twenty-four girls.

Where are the twins? Look, they are sitting at the back of the classroom. Lucy is in a red coat. Kate is in a yellow sweater.They are having a Chinese class. They like Chinese.

小题1:The two girls are twins. They are in a school of China.

小题2:Lucy and Kate are in the same class.

小题3:Lucy is in a yellow sweater.

小题4:Now they are studying Chinese in the classroom.

小题5:There are twenty-eight girls in their class.

对诊断与指导治疗尖锐湿疣最有价值的检测方法是（）。

A.细胞学宫颈涂片检查

B.免疫组化检查

C.分离培养

D.分子生物学方法

E.5%醋酸试验

旅客座席基本运价是指大型座席（）在等级公路上运送旅客的每人公里运价。

A.中级客车

B.高一级客车

C.高二级客车

D.普通级客车

债权人应当在人民法院确定的债权申报期限内向管理人申报债权，下列选项中，可以不申报的是()。

A.仲裁未决的加工费

B.附期限的借款

C.有财产担保的货款

D.按规定应当支付给职工的补偿金

离子交换树脂主要是由（）、（）和（）三部分组成。