问题：
【题文】More and more high-rise buildings have been built in big cities ________ space.
A. in search of B. in place of C for lack of D. in memory of
【题文】More and more high-rise buildings have been built in big cities ________ space.
A. in search of B. in place of C for lack of D. in memory of
A. in search of B. in place of C for lack of D. in memory of
参考答案：