随着小儿年龄增长，其脉搏、血压变动规律是( )
A．脉搏增加、血压减低B．同步减低C．脉搏减低、血压增加D．同步增加E．基本不变
参考答案：C
— Alvin, are you coming with us?
— I'd love to, but something unexpected _____. [ ]
A. has come up
B. was coming up
C. had come up
D. would come up
《国家环境保护“十二五”规划》提出、20蒸吨（含）以上的燃煤锅炉自愿安装高效除尘器，鼓励其他中小型燃煤工业锅炉使用低灰分煤或清洁能源。（）
