单选题 People try to avoid public transportation delays by using their own cars, and this ______ creates further problems.
A. in short B. in case C. in doubt D. in turn

【正确答案】 D
【答案解析】本题考查介词短语。in short简而言之，总之；in case以防万一；indoubt在怀疑中；in turn依次轮流，反过来。本句的意思是：“人们试图通过开自己的车来避免公共交通耽搁的时间，但是这恰恰增加了更深层次的问题。”