实验动物脑复苏抢救时直肠温度所下降的最低临界值为（）。 A.30℃ B.25℃ C.

合并多发伤不宜立即手术的肩胛骨骨折，宜在伤后进行手术的时限是（）。

A.1～2周

B.2～3周

C.3～4周

D.1个月以内

E.3个月以内

阅读下列短文，根据短文内内容，从A、B、C、D、E中，选出最适合放入短文空缺处的选项。选项中有一项是多余的。

A. Make the important points

B. Understand the lessons

C. Study at the right time

D. Gather study materials

E. Study in advance

Tips on taking exams

The following are a few study tips for high school students and college students, which will help you answer your exam papers with confidence.

小题1:_________

It is better to have all the study materials available to you before you start reading. This not only includes your texts and notes but also the previous years’ notes and things like a dictionary and reference books. This has two advantages. Firstly, you do not need to break your concentration (专心) by searching for books. It saves time. Secondly, it gives you a feeling of being prepared for the exams, as you have all the necessary things and the only thing left its to start studying .

小题2:__________

The most common mistake that students make is that they start studying a day or two before exams. You can’t revise (复习) all the notes if you study only two days before exams. Therefore, what most of the students do is study only the “so-called” important points. As a result , even if the test paper is easy , you get a low score only because you don’t know the entire syllabus （课程提纲）. So start studying at least a month before the exams.

小题3:_________

If you have descriptive subjects, do not just remember the answers. Try to understand what you are reading, for this is the best methods for good recall at the time of exams. The major disadvantage of reciting is that if you forget one word of the answer during your exam, you tend to go completely blank. On the contrary (相反地), if you understand the subjects well, you can write the answer on your own at any time. For exams like math , practice at least five sums every day. Math cannot be learned in a day .

小题4:________

The last tips is to study when you are in your best mentally active state. Some people are comfortable studying in the early morning, while some like studying at night. Find out the time when you are fresh and relaxed and choose that time for your studies.

计算：6x-（2x-y）-[2y+（x-3y）]．

小刘在某电器城购买了一台冰箱，并留下了个人姓名、电话和电子邮件地址等信息，第二天他收到了一封来自电器城提示他中奖的邮件，查看该邮件后他按照提示缴纳中奖税款后并没有得到中奖奖金，再打电话询问电器城才得知电器城并没有举办中奖活动。根据上面的描述，由此可以推断的是：（）。

A、小刘在电器城登记个人信息时，使用了加密手段

B、小刘遭受了钓鱼邮件攻击，钱被骗走了

C、小刘的计算机中了木马，被远程控制

D、小刘购买的冰箱是智能冰箱，可以连网

运动器械飞行时绕其纵轴以一定的角速度旋转，可产生定向作用，增强飞行的（）。

A、高度

B、远度

C、稳定性

D、速度