甲状腺激素不具哪项药理作用（）。

A.维持生长发育

B.增强心脏对儿茶酚胺的敏感性

C.维持血液系统功能正常

D.维持神经系统功能

E.促进代谢

句型转换。

1. She has a new bike.(改为否定句)

She ____ ____ a new bike.

2. They are English.(同义句转换)

They are ____ ____.

3. My sister is eleven.(对画线部分提问)

____ ____ is your sister?

4. Tom has big eyes.(改为一般疑问句)

____ Tom ____big eyes?

5. They are their apples.(对画线部分提问)

____ ____ are these?