515.More and more highrise buildings have been built in big cities ___ space.
A.in search of
B.in place of
C.for lack of
D.for fear of
516.It is illegal for a public official to ask people for gifts or money ________ favors to them.
A.in preference to
B.in place of
C.in agreement with
D.in exchange for
515.答案是C;
in search of 寻找;in place of 代替;for lack of 缺乏;短缺;for fear of 担心,害怕。根据句意,选C。
516.答案是D;
in preference to 优先于;in place of 代替;in agreement with 同意,与…一致;in exchange for 作为交换。