1T在即，请教几道语法题，谢谢！

alvinzhangUID: 198862

2004.8
14. A lingua franca is any auxiliary language, -------a rudimentary kind, used as a medium of communication between people who speak different languages.
(A) of which usually
(B) which usually of
(C) is usually of
(D) usually of
答案：D
请问usually of是固定用法吗？还有其它类似的形式吗？

26. Because it is often dependent of the conditions of crystallization, the composition of the minerals in a rock can be important in determining the rock's geologic history.
答案：B
此题我觉得有问题。dependent后面应该是On吧。是否划线错误？如无错误请指教！

drift0208UID: 2169558

第二题讨论过无数次了，我觉得是划线错误，应该划在第一个OF那里

冰雨1123UID: 2116492

which is usually of a rudimentary kind
省略了which is.

alvinzhangUID: 198862

谢谢！这个考点还得多加练习！呵呵