与人耳能听到的声音相比，次声具有较小的（　　）

反应A（g）+3B（g）⇌2C（g）+2D（g），在不同情况下测得反应速率如下，其中反应速率最快的是（　　）

⑴Are you going to the beach?____         A. I'm going to the shop.

⑵Where are you going?____                   B. Yes, I am.

⑶Is he going to the bank?____               C. She is going to the park

⑷Where's she going? ____                      D. No，he isn't.

⑸What's Jenny doing?____                     E. She's thinking

多音字组词。

地

de  ____

dì  ____