漫画《拥塞》给我们的启示是(　　)

A．要重视理论对实践的指导作用

B．要积极抓住时机促成事物质变

C．要树立实践第一的观点

D．要树立全局观念,立足整体

American Indian languages, which differ widely, tended to group many units of meaning into multisyllabic words.

A．all tend

B．and tend

C．to tend

D．tending