Down the entrance hall of the school walk four eighth-grade students. Each one is carrying

a small basket with a single egg inside. Soon more students join them each one of them is also carrying a basket with an egg. The eggs in a basket are part of a new school program that helps young people understand that having a baby is a great duty. At the beginning of the program, the teacher puts the students in pairs：one girl and one boy. Each pair gets an egg, which they must take care of for two weeks. For those fourteen days, the students have to take care of the eggs as though they were real babies. Students whose eggs get broken have to start the two weeks all over again with a new egg. One person in each pair must have the egg with him or her at all times 24 hours a day. At no time can they let the egg be out of sight. "If a teacher catches you without your egg," said one student, "she makes you go get it. They are really strict." The teachers also make the students spend half an hour each day sitting with the egg and just watching it. That can get pretty boring. But it's also something that parents spend a lot of time doing. Children say that the program has helped them understand the duties involved in having a child. "It was really hard," said one student, "You had to think all the time about the egg." The purpose of the program is to help students grasp the idea of A. carrying a basket with an egg

B. bringing up a baby

C. laying eggs

D. studying hard at school

At the beginningA.only one student joined the program

B.four students in all were interested in the program

C.eight students became members of the program

D.more students than teachers liked the program

In the third line of Paragraph 2， "they" refers toA.teachers

B.students

C.eggs

D.programs

Why should the students in the program spend half an hour each day sitting with an egg and just watching it？A.Because it is very boring to have the egg with them at all times.

B.Because the teachers in this program are very strict.

C.Because only in this way can students understand parents in taking care of children.

D.Because if students do not do it, they will fail in the examination.

From the last paragraph， we can infer thatA.a Program is not only way to educate children

B.one has to think about a program all the time

C.only one child grasps the purpose of the program

D.the program is of help to children's understanding of parents

请帮忙给出每个问题的正确答案和分析，谢谢！