( )是保证达到施工质量要求的必要前提。
A．作业技术交底
B．质量控制点的设置
C．技术方案先行
D．测量及计量器具的性能和精度
参考答案：B
两条直线2x + 3y－k = 0和x－ky + 12 = 0的交点在y轴上，那么k的值是
A －24 B 6 C ±6 D 24
She doesn’t speak ____________her friend, but her written work is excellent.
A．as well as
B．so often as
C．so much as
D．as good as
