It is generally considered that the key ______a foreign language well is nothing

题型：不详难度：来源：

It is generally considered that the key ______a foreign language well is nothing      but practice.

A. to learning	B. to learn
C. of learning	D. for learning

 

答案

A

解析

考查介词。句中the key to……关键，to为介词，故选A。句意：人们普遍认为，学好外语的关键是练习。