铁口位于炉缸的最下沿，主要由（）组成。 A.铁口框架 B.保护板 C.砖套、

短跑运动员听到发令枪声后迅速起跑，下列叙述正确的是[ ]

A．起跑动作的产生是非条件反射的结果

B．调节起跑动作的神经中枢是听觉中枢

C．该反射有多个中间神经元先后兴奋

D．起跑反应的快慢取决于小脑兴奋的程度

阅读下面一首宋词，回答问题。（8分）

喜迁莺

晏殊

花不尽，柳无穷。应与我情同。觥船一棹百分空，何处不相逢。

朱弦悄，知音少，天若有情应老。劝君看取利名场，今古梦茫茫。

（1）“花不尽”“柳无穷”运用了什么修辞手法？这样写有什么表达效果？（4分）

Rewrite the following sentences as required. (根据所给要求，改写下列句子，每空格限填一词)

小题1:Lily had a good time during her stay in Beijing. (改为否定句)

Lily ________ ________a good time during her stay in Beijing.

小题2:We have a class meeting once a week. (对划线部分提问)

_________ _________ do you have a class meeting?

小题3:Many countries make laws to stop smoking in public. (改为被动语态)

Laws _________  _________ by many countries to stop smoking in public.

小题4:The river pollution is serious in our country today. (改为感叹句)

_________ _________ the river pollution is in our country today!

小题5:Robert is so short that he can’t yet reach the pears on the table. (改为简单句)

Robert isn’t _________ _________ to reach the pears on the table.

小题6:I can’t give you better advice than that. (保持原句意思)

I can _________ give you _________ advice.

小题7:Bill didn’t go to bed until he finished writing the letter at 11:45 last night. (保持原句意思)

Bill _________ _________until he finished writing the letter at 11:45 last night.

患者，女，56岁，突发性头痛伴恶心呕吐及意识障碍5h来院急诊。入院体检：神志不清，呼之能睁眼，左侧眼睑下垂，左侧瞳孔直径约5mm，右侧瞳孔直径约2.5mm，颈项强直，克氏征阳性，四肢均能活动。

若患者诊断为蛛网膜下腔出血，引起出血最可能的原因是（）

A.前交通动脉瘤

B.脑动静脉畸形

C.后交通动脉瘤

D.大脑中动脉动脉瘤

E.烟雾病