Nancy：Hi，David．Welcome to my home．

David：Wow，____

Nancy：Thank you．

David：Is this your family photo?

Nancy：Yes．This is my mother．

David：Wow，she looks young．____

Nancy：She is a secretary．

David：Is your father a scientist?

Nancy：Yes，he works at a university．

David：____By car?

Nancy：No，he goes to work by bike．____

David：Great．He has a very healthy life．Look at your sister．____

Nancy：Yes,her favourite toy was lost．David,come to my bedroom．Let's play computer

David：Great

A．What does she do?

B．Your home is big and beautiful．

C．She looks worried．

D．How does he go to work?

E．He likes riding a bike．

动物家族中成员最多的是____ ，属于____ 动物，在体表长着一层保护身体的____ 。

（2015•湘潭）$\frac{1}{2}$的倒数是____ ．

伽利略曾说过，与其夸大其说，不如宣布那个聪明的、智巧的、谦逊的警句：“我不知道”。（     ）

①谎言可以欺人一时，但是不能欺人一世    ②谎言一旦被揭穿就会难以立足

③说谎既伤害别人也伤害自己                        ④说谎会受到法律的惩罚