肾功能减退病人慎用的抗生素有（） A.四环素 B.氨基糖苷类 C.万古霉素 D.氯霉

单词拼写 

1. Hundreds of people are still in the water,waiting to be r____. 

2. Tom is a c       of mine at the bank.We have been working in the same office.

3. We are anxiously waiting the o       of the negotiations. 

4. There is a fire e       on each floor of the building,for ?people? to escape in case of fire.

5. Upon leaving for her homeland,she bought a lot of s       for her friends.

6. The use of certain chemicals has now been           (宣布) illegal. 

7. Two men are          (协助) the police with their enquirers.

8. His wife bought a new           (微波炉) from the supermarket last week. 

9. The doctors           (治疗) him of his cancer with this new medical method. 

10. In modern wars,           (导弹) are frequently used to ?destroy? distant military objects.

脊柱骨关节炎的X线表现特征是（）

A.常蔓延数个椎体，晚期增生明显，骨性融合成块

B.常累及多个椎骨，可伴有双骶髂关节病变，晚期韧带钙化呈竹节样，椎体无破坏

C.累及单个椎体，椎间隙正常，常有椎弓根破坏

D.骨质增生及间隙变窄，椎体边缘硬化，无骨质破坏

E.椎体破坏，可有死骨，椎体压缩呈楔形，椎间隙变窄

Over the years the European Union has made great efforts to _______ the safety of food and protect the health of its people.

A．discover

B．ensure

C．revise

D．react

左心房内球形血栓是（）

A.白色血栓

B.红色血栓

C.混合血栓

D.透明血栓

E.血凝块

工业发展经历了单件生产方式、大量生产方式、精益生产方式。