单选题 With the development of the Internet, people's life ______ in the past few years.
A. is improved B. has been improved
C. is improving D. had been improved

【正确答案】 B

【答案解析】[考点] 动词时态及语态
[解析] 根据句子后面的时间状语in the past few years可以知道句子应该使用现在完成时；另外生活水平提高，应该用被动语态。