为促进年幼的侏儒症患者的生长发育，可以为他注射下列激素中的（  ）

求等差数列数列6，9，12，…，300的项数．

The dog stopped____  at strangers when they ran away. (bark)
The ____  people think red, green and white are Christmas colors. (west)
Every day the chimneys of ____  pour a lot of smoke to the air to pollute it. (factory)
I think you may be ____  in our new computer games. (interest)
I often make chocolate cake by ____ . (me)

⑴I'm Bobby.           ____        A. 你好，我是麦克。

⑵Hi, Sam.             ____        B. 早上好，同学们。

⑶Good morning, class. ____        C. 你好，萨姆。

⑷Hello, I'm Mike.      ____        D. 我是波比。

⑸Good afternoon.     ____        E. 下午好。

一杯热水的降温规律是____。