【题目】_____ interest in studying abroad is rising, more Chinese students who study abroad are also returning home upon completing their degrees.
A.OnceB.SinceC.WhileD.Until
在线课程【答案】C
【解析】
考查连接词辨析。句意：虽然出国留学的兴趣正在上升，但更多的中国留学生在完成学业后也会回国。A. Once一旦；B. Since因为；C. While虽然；当……时候；D. Until直到。本句引导让步状语从句，表示“虽然”，故选C。