索洛指出经济增长率取决于资本和劳动的增长率、资本和劳动的产出弹性以及随时间变化的（）

如图5所示，两光滑且平行的固定水平杆位于同一竖直平面内，两静止小球m₁、m₂分别穿在两杆上，两球间连接一个保持原长的竖直轻弹簧，现给小球m₂一个水平向右的初速度v₀.如果两杆足够长，则在此后的运动过程中，下列说法正确的是（   ）

图5

A．m₁、m₂系统动量不守恒

B．弹簧最长时，其弹性势能为m₂v²₀

C．m₁、m₂速度相同时，共同速度为

D．m₁、m₂及弹簧组成的系统机械能守恒

小题1:__ One of the best things you can possibly do is to start you own club．It’s great fun especially if you are the sort of person who feels there’s never anything to do during the school holidays．

The first thing you need to come up with is an idea for your club．小题2: . Pets, clothes, pop music or dancing groups, sports, making things? The list is endless．

Next you need some friends to be in your club with you． 小题3: .  All you need is three or four other people who are interested in the same thing as you．

  小题4:  . You should all sit down somewhere together with lots of pieces of paper and write down every name you can think up．That’ll keep you busy for ages．

At your first meeting you should make up a rule book．And the first rule should be no grown-ups or little/big brothers or sisters! The best clubs are always secret!

Now you have just about everything you need, except membership cards．These are very important and again you can spend a lot of time making them．   小题5: .Why not leave some space for a photo of yourself? That will make the membership card really look like it．

So there you are, get clubbing! Once you get started you’ll think of loads of more interesting things to do!

A．That’s easy．

B．Enjoy your own club!

C．Invite a designer to join you．

D．What are you interest in?E. Some vacation is coming．

F. Then you need to pick a name for your club．

G. Use a bright thick pen to make a special design．

输卵管(Fallopiantubeoroviduct)

患者男性，38岁，尿毒症，血压185/110mmHg，心率60次/分，ECG显示ST-T波改变，维持血液透析4年，拟行同种异体肾移植手术。

移植肾的血管吻合开放前为了保证良好的肾灌注可采用下列措施，但除外（）

A.甲基泼尼松龙6～8mg/kg静注

B.呋塞米100mg静注

C.肾上腺素1μg/min

D.20%甘露醇100ml静滴

E.多巴胺2～3μg/（kg·min）