采购方式主要有哪几种？

Susan Boyle is a very        singer all over the world. She is 49 years old. Before she         famous, she was poor. She had        job and she was living alone in a small town in England. She looked shy（害羞）and didn’t dress       .

All these things changed after she came to a big show in Britain. In the show, people could show      special talents（才能）.       , when she said she wanted to be famous as a singer, everyone laughed at her. But when she opened her mouth and began singing, all the people        laughing. Her voice was so wonderful that everyone lost themselves in it.

Now Susan has too many       . She is loved by everyone and she even took a trip to America. At the airport,        her fans from different places went to meet her and       , “We love Susan.”

小题1:A．popular             B．nice                 C．interesting

小题2:A．turned              B．became               C．got

小题3:A．an                  B．some                 C．no

小题4:A．good                B．well                 C．beautiful

小题5:A．they                B．theirs                  C．their

小题6:A．At first                B．At last              C．In the end

小题7:A．began               B．stopped              C．liked

小题8:A．fans                B．students             C．teammates

小题9:A．2 thousands         B．thousands of         C．a lot

小题10:A．said               B．talked               C．shouted

采用异烟肼比色法测定甾体激素类药物含量时，以下叙述正确的是（）

A.适用于雌激素类药物

B.反应产物为肟

C.反应需在酸性下进行

D.反应产物的最大吸收波长为550nm

E.反应及产物对空气氧敏感，需通氮气

痛经的治疗原则主要是

A．调理冲任气血
B．理气化瘀止痛
C．温经暖宫止痛
D．益气补血止痛
E．益肾养肝止痛

为了保证机械设备的安全运行和操作人员的安全，一般采用哪些措施？

电容器安装的条件应该满足（）。

A、无易燃危险

B、无漏电危险

C、无易爆危险

D、无强烈震动