当用户提出压力不够时采取的措施是（）。
参考答案：增开一台空压机
大血藤来源于( )
A．茜草科B．樟科C．毛茛科D．木通科E．豆科
This is a junior school. You should go to a senior school ___ girls of your age. [ ]
A. for
B. about
C. from
D. to
