Have you heard of snake robots? Scientists and doctors are already using tiny sn

Have you heard of snake robots? Scientists and doctorsare already using tiny snakes that coil through the human body armed with sharpsurgical tools to perform operations on hearts, prostate cancer, and otherdiseased organs. The snake robots that carry tiny cameras, scissors andforceps, and even more advanced sensors are being developed.

The next generation of the robots will be wireless,and will explore inside your body on their own--- not attached to any cables.For now, they are powered by cables that humans control. Experts say the day iscoming when some robots will roam around the body on their own. But the expertsin robotics say the new creations work best when they are designed for veryspecific tasks.

Howie Choset has been researching and building robots,particularly snake robots. He believes that his snake robot and others like itcan help reduce medical costs by making complex surgery faster and easier.Choset says his new design is smaller and more flexible than earlier models.

The size of surgical robots allows surgeons to operatewith far less damage to the body, helping the patient heal faster. Choset hasalso built larger snake robots designed for search and rescue, or justexploration. They can climb poles and trees and then look around through acamera in the head and slither through places that humans cannot reach.

“ We sent our snake robots into these caves in the RedSea to look for evidence of ancient Egyptian ships,” he said. “ To me,archeology is like search and rescue, but everyone has been dead for 5,000years.”

The doctors are very excited about the potential forsurgical robots to do things that humans can’t do. The variety of sensorsavailable for surgical robots keeps expanding. As they get smaller, maybe oneday they will be able to test chemicals or blood in the body, or even theelectrical connections in nerves.

1.What can we learn from the first paragraph?

A．The doctorscarry out surgery using snake robots mainly for heart disease.

B．The doctorsare very satisfied with the new snake robots during surgery.

C．Snake robotsare completely free of human control today.

D．Othersupplementary appliances will be added to snake robots.

2.Which of the following is true, according to thepassage?

A．Snake robotsare only used in the medical field.

B．Snake robotscan reduce the patients’ medical costs.

C．Scientistsare uncertain about the prospects for snake robots.

D．Scientistsare forced to spend a lot of time researching snake robots.

3.How can snake robots work best, according to thepassage?

A．When theycarry tiny cameras, scissors and forceps.

B．When they areoperated by experienced doctors.

C．When they aregiven a wireless function.

D．When they aredesigned for particular tasks.

4.Why do we know about Howie Choset, according to thepassage?

A．He thoughtsnake robots of different sizes can be used for different types of surgery.

B．He thoughtpatients’ pain had been slightly reduced with thehelp of snake robots.

C．He also madesnake robots for search, rescue and exploration.

D．He is veryinterested in researching ancient Egyptian ships.

5.The writers attitude towards the new technology is______.

A．optimistic         B．doubtful           C．objective          D．negative

试题答案

【答案】

1.D

2.B

3.D

4.C

5.A

【解析】

试题