问题补充：
There are some between languages . So they are used .
A. different; different; differently
B. differences; differences; different
C. differences; different; differently
D. differently; difference; different
答案：
A. different; different; differently
B. differences; differences; different
(答案→)C. differences; different; differently
D. differently; difference; different
解析：介绍事物用名词，有一些不同点应该用不同点的复数differences，修饰名词用形容词，languages是名词，前应该用形容词不同点different，修饰动词use用副词differently，故本题选C。
