请从所给的选项中，选择最适合的一个填入问号处，使之呈现一定的规律性（） A．A B．

    学校作息时间表在不同季节往往会根据当地白昼时间的长短作相应调整。现在北方某一所学校在冬季地的昼夜情况怎样[ ]

A、昼长夜短

B、昼夜等分

C、昼短夜长

D、不确定

干熄焦的排焦温度严格控制在()以下。

第三部分任务型阅读（一）（共10小题；每小题1分，满分10分）

Going up to university to study for a degree means you have decided to study professionally, rather than as an amateur; so being a student is now your profession for at least the next four years.

This involves a change of attitude in many ways. Now, instead of taking several subjects, you have chosen one major subject because you find it interesting and worth exploring further. You also have before you the goal of getting a degree. The degree and the stages you have to pass through to achieve it give you motivation. You are no longer forced to stay in school all day, and apart from your class time, you organize your own time and place for studying.

Another change is in the relationship with those who teach you. You are there to study actively rather than to be taught passively. Your teachers may or may not urge you, but they do want you to share their interest in the subject and they want you to succeed. If you get work back with a poorer mark than you expected and with various criticisms, don’t feel discouraged by this; if you don’t understand what is wrong and how to improve, ask your teacher to explain and don’t be satisfied until you do understand.

Professionalism involves training and practicing. Some activities, like reading, note-taking, speaking and discussing are basic to studying. Make sure you can do these effectively. You have to use time well, and practice to improve your skills.

Effective reading is part of your training. Since it is a learned skill we can change the way we did since in primary school and relearn it. Learn how to read fast—how to read with your eyes rather than your throat, how to ignore words like “of” and “the”, and how to keep what you read.

You take notes in class for yourself, not for anyone else, so make your notes easy to read, economical and pleasing to the eye. Vary the arrangement on the page to suit the material (diagrams, columns, underlining), use colored pens for different topics to catch the eye and make things stand out. Work out your own shorthand speedwriting.

Group discussions give you a chance to train your ability to express yourself. Don’t be the non-speaking member of the group. Take an active part in the discussion. In the future you are almost certainly going to have to be good at speaking, so get into the way of talking about your subject now. This is actually more fun than sitting being silently uncomfortable. Nobody will think what you say is foolish. Everyone will be thankful not to face embarrassed silence.

病历摘要：患者男性，45岁。头部被他人用木棍打伤1小时，呕吐3次，于23时急诊就医。受伤当时昏迷约20分钟。既往身体健康。体检：T：37.6℃，P：82次／分，R：19次／分，BP：20／13kPa（150／98mmHg）。GCS：11分，躁动。双侧瞳孔等大、等园，直径2.5mm，对光反射迟钝。双侧额部和右枕部有多处头皮伤痕和头皮血肿，右额部有一长4.0cm之头皮裂伤。四肢可活动，右侧Babinski征（士）。

提问：病人出现上述情况，主要可能由哪些病变所致？（提示：入院5小时，患者意识障碍加重。体检：P：76次／分，R：16次／分，BP：22／13kPa（165／98mmHg），GCS8分，浅昏迷，左侧瞳孔4.0mm，对光反射消失，右侧瞳孔3.0mm，对光反射极弱，右侧肢体活动稍差。右侧Babinski征（+）。）（）

A.原左额颞部硬脑膜下血肿增大

B.出现对侧硬脑膜下血肿

C.出现对侧硬脑膜外血肿

D.右侧小脑幕切迹疝

E.左侧小脑幕切迹疝

F.创伤性脑水肿加重

机械大修理的标准？