句型转换。

1. She always gets up early. (改为一般疑问句并作肯定回答)

    —______ she always ______ up early?

    —Yes, ______ ______.

2. My English teacher is from Australia. (改为同义句)

    My English teacher ______ ______ Australia.

3. This kind of animal eats grass and leaves. (改为否定句)

    This kind of animal ______ ______ grass ______ leaves.

4. There are about 1, 600 pandas in the wild in China. (对划线部分提问)

    ______ ______ pandas ______ ______ in the wild in China?

5. doesn't, vegetables, eat, the, snake, eating, but, likes, meat, it(. ) (连词成句)

    ______________________________________

图1是人体内的动脉和静脉的横切面图。图2是人体内血液与组织细胞之间的气体交换示意图。请据图回答有关的问题。

图1动脉和静脉的横切面图            图2血液与细胞之间的气体交换

(1)图1中的编号①血管是_______血管，理由是该血管的管壁较_______。

(2)图2中的X气体是_______，Y气体是___      ____。

(3)图2中的血液是在_______血管内流动，该血管壁是由_______层上皮细胞构成的。