锅炉、压力容器、电梯、起重机械、客运索道、大型游乐设施、场（厂）内专用机动车辆的（）

A．Lewis（1967）认为，焦虑作为一种精神病理现象，不具有（）的特点。

A.指向未来

B.情绪状态

C.欣快体验

D.躯体不适惑、精神运动性不安和植物功能紊乱

补全对话。

Joan : Ann ,      1    

Ann:The future? Well,l think we'll study at home on computers. And       2    

Joan:You think so? What else will we do?

Ann:      3      

Joan:Where will we be able to go on vacation?

Ann:      4      

Joan:The moon?     5      

Ann:Because it's much more interesting on the moon than on the earth!

A. we don't have to go to school.

B. Why don't we take vacations on the earth?

C. We'll take long vacations,too.

D. what do you think of the future?

E. To the moon!

1.             2.             3.             4.             5.         

雷丸用治下列何种虫病最佳（）

A.蛔虫病

B.钩虫病

C.血吸虫病

D.蛲虫病

E.绦虫病

The young tribal man helped Mrs. Davidson find her way back, in return for________medical equipment was offered to him by the latter.

A．that

B．whose

C．which

D．whom

大多数脑梗死于发病后多长时间才逐渐显示与闭塞血管供应区一致的低密度梗死灶（）

A.4～6h

B.6～12h

C.12～24h

D.24～48h

E.48～72h