七节骨
参考答案：
第四腰椎至尾椎骨端成一直线，称为七节骨。用拇指桡侧面或食、中二指面自下向上或自上向下作作直推，分别称为“推上七节骨”和“推下七节骨”
用所给词的适当形式填空。
1. It was raining __________ (heavy), and we didn't go to school.
2. Mao Zedong was the __________ (found) of the PRC.
3. Our math teacher asked us __________ (not use) calculators.
4. The book is __________ (interesting) one of all the books.
5. Mike __________ (watch) TV yesterday evening.
任何起重施工方案编制程序都由三个阶段构成，即准备阶段、编写阶段和（）。
A.实施阶段
B.打印装订阶段
C.审批阶段
D.检查阶段
