口语应用：在下列横线上填入适当的话语，使对话意思完整、正确。（每小题2分，计8分）

A：Have you ever heard of the Project Hope?

B小题1:                                                

A: Could you please tell me something about it?

B : 小题2:                         Project Hope is a social service program to help poor students.

A: 小题3:                                                 

B : It started on October 30^th,1989.

A : 小题4:                                                   

B: Yes, it has helped millions of students. And it has built thousands of schools.

A: That’s great. What can we do to help the students?

B : You can give away your old books and pocket money .

A: Good idea!

下表是对1、2两个家庭成员某些特征的调查结果，请据表回答问题：（已知有耳垂、双眼皮为显性性状）

（2）父母是双眼皮，而女儿是单眼皮，此现象称为______．

（3）若双眼皮基因和单眼皮基因分别用A、a表示，请分别写出1号家庭中母亲和女儿的基因组成：______．

（4）根据2号家庭父母及子女表现的性状，推测该家庭父亲所产生的生殖细胞有______种类型．

（5）若1号家庭符合生二胎的条件，那么这对夫妻第二胎生个儿子的概率是______．