【题目】Education has always been a hot topic among parents ______ it is directly related to the future of their children.
A. as B. in case
C. unless D. even though
在线课程【答案】A
【解析】考查连词。A. as因为；B. in case万一；C. unless除非；D. even though虽然，即使。句意：教育一直是父母们的一个热门话题，因为它直接关系到孩子的未来。此处表原因，故选A.