具有保护、润滑、杀菌、止痒、去痂作用的外用剂型是：（）。 A.溶液 B.粉剂 C.洗

阅读理解，回答问题。

Sam: Look, I've got an email from Lingling. It's about her dog.                  

Fanfan: What does it say?                                                      

Sam: Yesterday her Dad bought a little dog for her.                            

Fanfan: What's the dog's name?                                                  

Sam: His name's Doudou. He's one year old. He had a Chinese breakfast yesterday.

Fanfan: What did he have?                                                      

Sam: He had eggs and porridge(稀饭).                                          

Fanfan: What did Lingling do with her dog?                                      

Sam: She played football with her dog. Doudou can catch the ball well.          

Fanfan: Great!  Maybe one day I will go to see him.                            

1. Has Fanfan got an email from Lingling?                                      

    _____________________________________________________________________        

2. What did Lingling's Dad do yesterday?                                      

    _____________________________________________________________________        

3. How old is Lingling's dog?                                                  

    _____________________________________________________________________        

4. What did Doudou eat yesterday?                                              

    _____________________________________________________________________        

5. Can Doudou catch the football?                                              

    _____________________________________________________________________        

如果-4xy²+axy²=-7xy²，则a=______．

卵巢主要合成雌二醇、雌酮和雌三醇3种雌激素。

根据《中华人民共和国票据法》的规定，背书人在汇票上记载“不得转让”字样，其后手再背书转让的，将产生的法律后果是()。

A．该汇票无效

B．该背书转让无效

C．原背书人对后手的被背书人不承担保证责任

D．原背书人对后手的被背书人承担保证责任

每平方米建筑面积交存的首期住宅专项维修资金的数额，由( )根据本地区情况确定并公布。

A．县级以上地方人民政府建设(房地产)主管部门
B．国务院建设主管部门
C．建设部会同财政部
D．直辖市、市、县人民政府建设(房地产)主管部门