“初中数学自学辅导法的实验研究”是一个( )
A．多因子实验研究
B．前实验研究
C．验证性实验研究
D．单因子实验研究
参考答案：D
Schools across China are expected to hire 50000 college graduates this year as short-term
teachers , ________ reduce unemployment pressures. [ ]
A. help
B. to have helped
C. to help
D. having helped
分部工程施工组织设计应该突出( )。
A．全局性
B．综合性
C．指导性
D．作业性
