23.Our older generation used to advise us not to build ___ in the air,because that's not realistic at all.
A.attics B.castles C.buildings D.rostrums
24.The voyage diaries were handed down by his great grandfather,so their brothers have kept them as ____.
A.the apple intheir eyes
B.the apple of their mouths
C.the apple of their eye
D.an apple of their eyes
23.答案是B,此题考查习语，空中楼阁为castles in the air。
24.答案是C,the apple of one's eye为固定习语，某人的掌上明珠。
