第二部分语言知识及应用（共两节，满分45分）
第一节单项填空（共15小题，每小题1分，满分15分）
　　从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
The Chinese astronauts Liu Boming,Zhai Zhigang and Jin Haipeng were so stuck by _____ beauty of _______ nature that they took some pictures in space.
　　　A./; / B./; the C.the; the D.the; /