正常女性体细胞中的一对性染色体是（　　）

世界各地凡华人居住的地方多被称为“唐人街”，中国人常被称为“唐人”。这名称的由来是因为（    ）

①坚持党的领导，是实现人民当家作主和实行依法治国的政治保证

②人民当家作主是社会主义的本质要求

③依法治国是党领导人民治理国家、实现人民当家作主权利的基本方略

④三者有机统一于中国特色社会主义民主政治建设

补全对话，每空一词

A: Jim, ____you have time this afternoon?

B: Yes, I do. Do you have any ideas?

A: What____ going to the zoo?

B: That's a good____.

A: There are some new ____in the zoo.

B: What are they?

A: Some zebras, giraffes ____ kangaroos.

B: Really? Where are they ____?

A: Well, the zebras are from Africa and the giraffes are from ____, too.

B:____ about the kangaroos?

A: They are from Australia.

B: Well, I really want to see____. I think they are beautiful (美丽的).

A: Yes, let's go there at half____ two in the afternoon. OK?

B: Great！