腹部损伤行腹腔穿刺抽得不凝血液，诊断应考虑为 A．腹壁血肿或误入腹壁血管 B．误穿腹

中心在坐标原点，焦点在x轴上的双曲线的一条渐近线方程为4x+3y=0，则该双曲线的离心率为 ______

一腹壁静脉曲张患者，脐以上血流方向由下至上，脐以下血流由上至下。患者应考虑为（）.

A.上腔静脉阻塞

B.下腔静脉阻塞

C.门静脉高压或门静脉阻塞

D.髂内静脉阻塞

E.髂外静脉阻塞

在胆道疾病中最容易发生休克的是()

A．急性重症胆管炎

B．急性胆囊炎

C．肝内胆管结石

D．肝外胆管结石

E．胆道蛔虫病

　　What comes into your mind when you think about robots? Do you imagine armies of evil metal monsters planning to take over the world? Or, perhaps of mechanical men who have been created as guards or soldiers by a mad genius? Or maybe you think of man- like robots who act, think, and look like human beings. In fact robots like these have more to do with science fiction films than with real life. In the real world robots are machines that do jobs which otherwise have to be done by people. Robots either operate by themselves or under the control of a person.

　　In a car factory, for example, robot machinery can put together and paint car bodies. On the sea bed remotecontrolled（遥控）underwater machines with mechanical arms can perform tasks too difficult for divers. Robot spacecraft can explore the solar system and send back information about planets and stars.

　　Many robots have computer brains. Some robots are fitted with cameras , sensors, and microphones which enable them to see, to feel, and to hear. And some robots can even produce electronic speech.

　　All this does not mean that a robot can think and behave like a human being. Present day robots have to be programmed with a good deal of information before they can carry out even simple tasks.

　44．Robots in real life________.

　　A. can behave like human beings   B. have the ability to control the world

　　C. can think by themselves        D. can help us with a lot of work

　45．According to this article, which of the following is not true about robots in the real world?

　　A. Some robots are as creative as artists.     B. Some robots can help manufacture cars.

　　C. Some robots can see and hear.       D. Some robots can explore outer space.

　46．Robots can perform many tasks for man because________.

　　A. they have intelligence    B. they are supplied with computer programs

　　C. they can imitate human beings    D. they have the ability to learn new things

　47．The robots in science fiction films and those in real life differ mainly in________.

　　A. mentality　　 B. appearance　　 C. material　　　 D. size