若经营安全状况要达到比较安全，则经营安全率为（）
A、30%以上
B、25%—30%
C、15%—25%
D、10%—15%
参考答案：C
All schools in our province _____ new English textbooks to improve students' listening, speaking, reading and
writing abilities three years ago. [ ]
A. admired
B. admitted
C. adopted
D. afforded
复分裂
