题干
A ________ traffic accident happened on the highway，but the driver was not ________ for the traffic accident.
A：severe；to be blamed
B：severely；to be blamed
C：severe；to blame
D：severely；to blame
答案(点此获取答案解析）
C
的等差数列，从第10项开始为正数，则公差
的取值范围是 （ ）