—Mrs.Smith， please teach me how to draw on the computer today.

—Mrs.Smith， please teach me how to draw on the computer today.
—Oh，no.      . You have to get familiar with the keyboard first.
A. Think twice before you do
B. Learn to walk before you run
C. All things are difficult before they are easy
D. Don't county our chickens before they are hatched
【答案】B
【解析】
【详解】考查谚语辨析。句意：----史密斯太太，今天请教我怎么在电脑上画画。---哦，不。按部就班来。你得先熟悉一下键盘。A. Think twice before you do三思而后行；B. Learn to walk before you run按部就班；C. All things are difficult before they are easy凡事总由难而易；D. Don't county our chickens before they are hatched不要过于乐观。根据You have to get familiar with the keyboard first.可知，学习电脑画画要按部就班，从易到难。故选B项。