岩心全部出完后要进行清洗，但对（）岩心要特别小心，不能用水冲洗。A、破碎 B、含油

采用密接式车钩的旅客列车，在运行中因故障更换15号车钩后，运行速度不得超过（）。

A．120km/h

B．140km/h

C．160km/h

v_max≤120km/h时，下道避车距钢轨头部外侧距离一般应满足（）

A、1.5m

B、2m

C、2.5m

D、3m

中医学的基本特点概括起来就是_____、_____两个基本特点。

阅读理解。

                                      Success Is Not a Destination(目的地)

     Should people stop once they have achieved something? No! In life, they are always trying to make

things better or have more of the same success.

     Athletes are constantly striving(努力) to shorten time for races, increase heights or distances.

The world of medicine has had its series of successes, too. Christian Barnard performed several

successful heart transplants. Other medical experts have achieved organ transplants. Throughout the ages, mankind has found treatments and cures for cancer and other diseases. A cure for AIDS might soon be

discovered.

     Age does not seem to slow down achievers. Tina Tuner at 54 is still singing in abundance(丰富) and

attracting sell-out crowds wherever she goes.

     Comedian George Burns, in his 90s, wants to perform at Caesar's Palace when he turns 100.

     Success does not belong only to the rich and famous. It should be the goal of everyone. Many

successful people have had humble beginnings.

     Would you believe that actress Michelle Pfeifer of Cat was a supermarket checkout girl?

     At work, we strive for achievement, too. Success may mean organizing a conference more effectively

and efficiently each year. Sometimes, it is not a pat on the back or the promotion that makes it

worthwhile.

      Often, it is the inner thrill(一阵激动) and satisfaction of achievement, no matter how small it may

be.

      Aiming for success doesn't mean you are greedy or dissatisfied. It is all part of gaining new

experiences. It ultimately(最终) makes you a more interesting and useful person in society.

     The journey to success has its road blocks, discouragement and distractions. It takes great

resourcefulness and achievement to overcome obstacles and setbacks to move on successfully

1. If an athlete can shorten time in races, he/she        .

A. is a real success

B. will stop his/her steps forward

C. is always sure to win

D. is the best runner of all

2.The expression "a pat on the back" probably means "       ".

A. patting somebody on the back

B. something important

C. singing somebody's praises

D. anything important

3. Which statement below is NOT true according to the passage?

A. Man now can transplant organs.

B. Man now can cure AIDS.

C. Not all successful people have humble beginnings.

D. Michelle was once a supermarket checkout girl.

4.The writer of the passage agrees to all the ideas EXCEPT that       .

A. any small success will make us excited

B. organizing a conference is a success

C. aiming for success is to gain new experiences in life

D. the journey to success is not so smooth to make

脑血栓形成最常发生于下列哪条动脉（）

A.大脑前动脉

B.颈内动脉

C.大脑中动脉

D.大脑后动脉

E.椎基底动脉