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题目内容
（阿坝师范学院大学英语）
Border _____ between the two countries are on the rise. [
A、 ] occurrences
B、 ] events [
C、 ] accident [
D、 ] incidents [
A、 ] occurrences
B、 ] events [
C、 ] accident [
D、 ] incidents [
参考答案
