What is the best title for the passage?

• A、What Can Doctors Do with Language Delay?

• B、What Can Be Done about Kids with Language Delay?

• C、How Can Language Delay Be Easily Detected?

• D、How Can Parents Prevent Kids from Language Delay?

56.（）

What happened after the engineer learmed“doing nothing ?

• A、He was not as busy as before.

• B、He began to enjoy each activity more.

• C、He started to do more of everything.

• D、He did not have as much fun as before.