下列各句中，加粗的成语使用恰当的一句是[ ]

A．青藏高原的恶劣环境是没有去过那里的人们无法想象的，大部分高海拔地区因高寒少雨，几乎寸草不留。

B．做人要正派，你这样到处刺探他人隐私是不道德的，古人不是也说过要目不窥园吗？

C．老太太的剪纸乡土气息浓郁，图案简洁明朗，既与使统的民间剪纸风格陈陈相因，又打破了固有的模式范畴，因而具有很多的感染力。

D．许多中学生朋友，往往把一些已蜚声海内外的大学问家的阅读主张奉为圭臬，无条件地照搬。然而这种仿效的效果，常常并不令人满意。

XP is (71) of interesting twists that encourage one to think--for example, how about "Test and then code" I’ve worked with software companies and a few IT organizations in (72) programmer performance was measured on lines of code delivered and testing was measured on defects found-- (73) side was motivated to reduce the number of defects prior to testing. XP uses two types of testing: unit and functional. (74) , the practice for unit testing involves developing the test for the feature prior to writing the code and further states that the tests should be automated. Once the code is written, it is immediately (75) to the test suite bringing instant feedback.

（72）处填（）。

A. them

B. where

C. that

D. which