已知f(x)=x+5(x＞1)2x2+1(x≤1)，则f[f（1）]=_____

若函数y=(k+1)xk2-k-1+5是关于x的一次函数，则k=______．

我国的优质产品标志有何特点？

在MGB1420万能磨床的工件电动机控制回路中，由晶闸管直流装置FD提供电动机M所需要的直流电源，（）电源由U7、N两点引入。

A、24V

B、36V

C、110V

D、220V

孙思邈不仅认真学习，而且在碰到疑难病无法治疗时，也从不畏缩，而是勤于思考，深入研究，尽力找出治疗的办法。有一次，一个病人得了尿闭症（尿潴留）不能小便，急忙找来孙思邈治疗。孙思邈看他的小肚子涨得那么厉害，心想，吃药怕来不及了，便想找一根管子插进 * * 试验。想到葱管又空而且又软又细，不妨用它来试试，便要了一根细葱，在葱叶的一头切去少许，细心地慢慢地插进了病人的 * * ，再用劲一吹，不一会儿，尿果然沿着葱管流了出来，病人胀大的小肚子慢慢地瘪了下去，病人尿闭症的痛苦顿时消失。孙思邈是最早使用导尿术治疗尿潴留的人。这体现了孙思邈哪方面的医德品格（）

A.赤诚济世

B.勇于创新

C.淡泊名利

D.舍己救人

E.不怕艰苦

Expressing gratitude is an important form of good manners. Nowadays more and more people in China have found it’ s high time to (16) a thankful heart for the young.

Everyone likes to get praised and appreciated. Gratitude is the greatest of virtues, which lets others smile and makes the world more beautiful. You just need several minutes to write down a thank-you note, but it brings much joy to the (17) .

We live in a society where we enjoy the different services of others. But (18) of them should be taken for granted.

Gratitude is also a kind of (19) in life. In developing gratitude for every moment--for the simple joys and even for the (20) times--we come to truly enjoy and appreciate life. Then we are able to see the (21) that surrounds us.

Try to write a thank-you letter to your parents for working hard to (22) you a happy life.

Be grateful to your teachers because of their (23) with your studies and character building.

Say thanks to your friends who (24) both your happiness and sorrow. We are sure it will bring them much joy and add (25) into your own life as well.

19（）

A.attitude 

B.feeling 

C.emotion 

D.sense