用同一强度等级水泥拌制的混凝土，影响混凝土强度的主要因素为( )。 A．砂率 B

鞘膜积液最常见的部位是（）

A.睾丸鞘膜积液

B.精索鞘膜积液

C.睾丸精索鞘膜积液

D.交通性鞘膜积液

E.先天性鞘膜积液

反求工程：也称反向工程，是用一定的手段，对事物进行剖析、测量，根据有关数据剖析其中关键技术的一系列方法。以下属于反求工程的是()。

A．赵工带领创新团队，通过文献检索，构建假设模型，设计方案，反复实验，研制出新产品

B．新来的李经理将在原单位的全套技术图纸拿出来，和公司总工程师一起研制同类新产品，获得成功

C．某国产汽车公司，将国外进口原装轿车拆解，分析研究，研制出具有自主知识产权的国产轿车

D．某机械厂购买了几台二手机床，经过拆卸、维修，重新组装调试，已经能正常使用

C

Years ago ,when I started looking for my first job ,wise advised,“Barbara, be enthusiastic! Enthusiasm will take you further than any amount of experience. ”How right they were!

“Nothing great was ever achieved without enthusiasm.”wrote Ralph Waldo Emerson. It is the paste that helps you hang on there when the going tough. It is the inner voice that whispers, “I can do it!”when others shout, “No, you can’t !”It took years and years for the early work of  Barara  McClintock, a geneticist who won the 1983 Nobel  Prize in medicine , to be generally accepted. Yet she didn’t stop working on her experiments. Work was such a deep pleasure for her that she never thought of stopping.

We are all born with wide-eyed, enthusiastic wonder and it is this childlike wonder that gives enthusiastic people such youthful air, whatever their age was. At 90,cellist Palblo Cassls would start his day by playing Bach.  A s the music flowed through his fingers his stooped shoulders would strengthen and joy would reappear in his eyes . As author and poet Samuei Ulman once wrote ,“ Years wrinkle the skin ,but to give up enthusiasm wrinkles the soul.”

Enthusiastic people also love what they do, regardless of money or power . Patricia  Mellrath, retired director of the Missouri  Repertory  Theatre in Kansas City, was once asked where she got her enthusiasm. She replied, “My father ,a lawyer long ago told me , I never made a dime until I stopped working for money.”

If we cannot do what we love as a full-time career, we can as a hobby. Elizabeth  Layton was 68 before she began to draw. This activity ended periods of depression that had troubled her for at least 30 years ,and the quality of her led one critic to say,“I’m tempted to call Layton a genius.”

We can’t afford to waste tears on “might-have-beens”. We need to turn the tears into sweat as we go after “what-can-be ”.We need to live each moment whole-heartedly, which all our senses-including pleasure in the sweet smell of a back-yard garden, the simple picture of a six-year –old ,the beauty of  a  rainbow.

66. What is the Chinese for “Enthusiasm”?

A.热情               B. 色彩                                C. 惰性                 D.金钱

67. Which of the following can best explain the underlined sentence in the second paragraph?

A. Enthusiasm can give you courage and strength in difficult times.

B. If you don’t have enthusiasm, you can achieve nothing.

C. Enthusiastic people never consider money and fame.

D. Enthusiastic people can gain great fame and honor.

68. The author mentions cellist Pablo Casals in the third paragraph to show that____

A. music can arouse people’s enthusiasm

B. enthusiasm can give people inspiration needed to succeed

C. enthusiasm can keep people feel young

D. enthusiasm can keep people healthy

69. How many examples are given in the passage to show the importance of enthusiasm?

A. Three             B. Two              C. Four                     D.  Five

70. The author mainly wants to say that _________

A. enthusiasm people never get old                            

B. enthusiasm can make you succeed and enjoy life

C. enthusiasm is more important than experience

D. enthusiasm can give people more success and fame .

金属氧化物避雷器绝缘在线监测装置要求受试装置在正常工作状态时，对电流信号接入端进行（）冲击电流。

A.4/5s/20kA

B.4/7μs/20A

C.4/10μs/10kA

D.4/10μs/20kA

下旋发球