Some experts think that language learning is much for children as their tongues are more

问题补充：

Some experts think that language learning is much for children as their tongues are more flexible.

A. easy

B. easier

C. easily

D. more easily

答案：

A. easy

(答案→)B. easier

C. easily

D. more easily

解析：本题考察形容词的用法。请注意：有个平行结构，说明两处都是比较级，这样才能说明：孩子更容易学，因为他们的舌头更柔软。选择B.