闭目难立征阳性可能为（）
A.大脑病变
B.中脑病变
C.小脑病变
D.延髓病变
E.脑桥病变
参考答案：C, E
装置停电时，首先做的工作是（）
A、将四通阀由生产塔翻到甩油罐
B、用泵-7和泵-7/1分别打对流和辅射，建立循环
C、加热炉熄火只留两个火，注水给汽放空
D、原料进装置阀关死
So sudden （）that the enemy had no time to escape.
A. did the attack
B. the attack did
C. was the attack
D. the attack was
