工程建设招标
参考答案：
是指建设单位就所建的工程发布通告，以法定方式吸引承包单位参加竞争，从中选择条件优越者完成工程建设任务的法律行为。
句型转换。
1. Her mother often made her clean her bedroom. (同义句)
She often her bedroom by her mother.
2. We used to keep the classroom clean. (一般疑问句)
you to keep the classroom clean?
3. I suppose Class Three won't win the basket match (连成一句)
I Class Three the basket match
4. Mary's passed the English test, ? (反义疑问句)
5. He didn't catch the early bus, he felt unhappy. (同义句)
the early bus made unhappy.
巷道断面中岩层面积（含夹石层）大于1/5小于（）的巷道界定为半煤岩巷道。
A.3/5
B.4/5
C.1/5
D.2/5
