What are the characteristics of expository language emergency

What are the characteristics of expository language emergency

Rigorous, accurate and concise

1. One of the misused words in brackets in the following sentences is ()
A. In order to make students learn more knowledge, Miss Li works very hard and often forgets to eat and sleep
Only by working hard (persistently) can we achieve excellent academic results
C. We must work hard to realize the great dream of the whole nation
He is very skillful in operating computers and has reached the level of doing everything

A. In order to make students learn more knowledge, Mr. Li works very hard and often forgets food and sleep. Forgetting food and sleep: forgetting to sleep or eat because of doing something