Advanced intelligent machines such as robots enable ______________________________________

crimes.

A．Y

B．N

C．NG

A．whatever

B．however

C．whichever

D．whenever

A.intelligent

B.intellectual

C.internal

D.external

According to Rose, a "smart" car

A．is equipped with advanced devices.

B．is installed with a robot.

C．is intelligent and can think itself.

D．can talk with people.

A、Artificial intelligence

B、Mobile Intelligent Terminal

C、Advanced Sensors

D、4G

Which of these statements is true based on the information in the passage？

A．The earth is one of the oldest planets in our galaxy.

B．Most scientists believe that there is intelligent life on other planets.

C．Scientists are trying different ways to find signs of life on other planets.

D．More advanced civilizations than ours have developed on other planets.

The author's conclusion about the subject is that______.

A．human race is likely to be taken over and crushed by a race of robots

B．computers are not yet likely to be made to reproduce similar or more advanced ones

C．the world is faced with the threat coming from monster machines

D．giant computers more intelligent than human brains will .soon be produced

ligent life exist elsewhere？" Since the Earth is an unimportant planet moving round an unimportant star, it would be a pride on our part to suppose that we are the only intelligent beings in the universe. But to obtain proof is difficult.

The main trouble is that our neighbor worlds, the bodies in the Solar system appear to be unsuitable for advanced life-forms. The Moon may be ruled out at once; it has hardly any atmosphere. Venus(金星) is little better; the surface temperature is extremely high and the atmosphere is mostly carbon dioxide. Mars with a very thin atmosphere and a severe shortage of water, may well support simple plant life but there seems no hope of finding animals, while the attractive Martians(火星人) of the story-tellers have long since been given up.

Of course this has not stopped the flow of bright ideas for communicating with the supposed people on Mars. In the early nineteenth century the great mathematician Gauss suggested planting treepatterns in Siberia(西伯利亚), so that the Martians would see them and replay suitably. Following up this idea, the Austrian scientist Karl Littrow proposed digging very wide ditches in the Sahara, triangular in patterns, and then filling them with petrol or some substance so that, when lit, the ditches would present Martian observers with a "flaming triangle" which would show the existence here of intelligent minds. Even better were the plans of Charles Cross, a French writer of the 1870's, who wanted to build a large mirror to reflect the sun's rays and concentrate them on the surface of Mars, thereby making a vast burning-glass. By swinging the mirror around, Cross explained it would be practicable to write words in the Martian deserts simply by burning the sand. For many years he bombared(轰击) the French government with literature about this plan and was very disappointed when no official interest was shown.

The opinion of the writer is that ______.

A．there may be other intelligent beings in the universe

B．there are other intelligent beings in the universe

C．people living on the earth are almost certainly the only intelligent beings in the universe

D．people living on the earth are definitely the only intelligent beings in the universe

ts. Most of these searches have been done over the radio. The hope is that someone in outer space may be trying to get in touch with us. Scientists also have sent radio and television messages, as well as messages on spaceships traveling through space, on the chance that someone may be receptive to such messages.

Scientists are using powerful radio telescopes to "listen" to signals from about 1,000 stars, all within 100 light years of the earth. In addition, they will scan the entire sky to listen for radio messages from more distant stars. Using a computer, they will be able to monitor more than eight million channels at a time. Scientists are looking for any signal that stands out from the background noise.

Of the 200 billion stars in the Milky Way galaxy, scientists find that five percent of the stars are like our sun. Perhaps half of them have a planet like the earth. Such a planet would be a reasonable distance from the star for the temperatures to be right for the evolution of life. Believing that there are the inhabitable (that can be lived in) planets in our galaxy, most scientists agree that chances are that one or more of these planets support some life.

However, many scientists wonder whether intelligent life exists on other planets. Some believe that thirty years of searching without any intelligent messages show that no one is out there. They say that the evolution of intelligence comparable to ours is unlikely.

(44) Other scientists believe that our search hasn't been long enough to rule out the possibility that intelligent life exists in our galaxy. Although our sun family is only about five billion years old, our galaxy is about 20 billion years old. In that time some scientists think it is likely that civilizations are much more advanced than ours. Perhaps these civilizations send us no signals; perhaps we have not recognized the signals they have sent us. If we hope to find intelligent life, these scientists believe that we have to keep looking.

To look for signals from distant stars, scientists______.

A．have sent up spaceships to other planets

B．have sent radio and television messages to outer space

C．are listening to the radio message all the year round

D．will use computers to pick up background noise