10.B
9.b (analysis: a, c and d do not conform to the meaning of dry materials. )
10.b (Analysis: "Kindness and good neighborliness" has two meanings: First, internally, we must work together in dealing with fraternal and ethnic relations; Second, we should handle the relations between different nationalities and countries in harmony. Therefore, items A, C and D do not conform to the directionality of the stem. )