患者，男，76岁。进行性排尿困难10余年，最近患肺炎后症状加重，出现排尿滴沥并伴有尿

A good way to pass an exam is to work hard every day in the year.You may fail in an exam if you are lazy for most of the year and then work hard only a few days before the exam.If you are taking an English exam,do not only learn rules of grammar.

Try to read stories in English and speak English whenever you can .A few days before the exam you should start going to bed early .Do not stay up late at night studying and learning things .Before you start to answer the questions,read carefully over the question paper.Try to understand the exact meaning of each question before you pack up your pen to write .When you have at last finished your exam,read over your answers .Correct the mistakes if there are any mistakes and make sure that you have not missed anything out.

小题1:What is the passage about?

___________________________________________________.

小题2:What will happen if you work hard only a few days before the exam?

____________________________________________________.

小题3:What should we do before the exam?

_________________________________________________________.

小题4:What should we do before answering the questions?

_________________________________________________________.

小题5:.What should we do after finishing the exam?

____________________________________________________.

如图所示是一个单摆的振动图象，根据图象所给的数据，试求：

（1）振幅；

（2）周期；

（3）单摆的摆长；

（4）A、B、C三点所表示的对应位置中，在哪个位置上摆球的速度最大，在哪个位置上回复力产生的加速度最大？它们的方向如何？（g=9.8m/s²）

眼眶手术、手术进路原则为（）

A.外侧开眶术是眶深部肿瘤手术最常用的手术

B.内侧开眶术适用于视神经内侧的肿瘤，有眶减压作用

C.经颅开眶术适用于切除眶尖肿瘤及治疗视神经向颅内蔓延的肿瘤

D.外侧和内侧联合开眶术是切除眶内侧病变的理想术式

E.前路开眶术适用于上部赤道部之前，经眼眶扪诊可触及的眼眶肿瘤

线槽内导线总面积不应大于线槽净面积的（）

A、50%

B、60％

C、70%

D、80%

已知向量η_s=（0，-2，1，-2）^T，则齐次线性方程组的基础解系是（）。

A．η₁，η₂

B．η₂，η₅

C．η₃，η₄

D．η₃，η₄，η₅