The significance of the finding is that ______.
A: people now know the number of chimpanzees is much smaller than expected
B: it may make it possible for scientists to discover new ways of treating AIDS.
C: it proves some deadly human diseases can also be transmitted to wild animals
D: it will soon help the scientists develop a vaccine that prevents the AIDS virus
A: people now know the number of chimpanzees is much smaller than expected
B: it may make it possible for scientists to discover new ways of treating AIDS.
C: it proves some deadly human diseases can also be transmitted to wild animals
D: it will soon help the scientists develop a vaccine that prevents the AIDS virus
举一反三
- AIDS has become one of the first killers to human beings. Despite their lack of success so far, scientists have ________ in their research for a cure for AIDS.
- 青书学堂: (单选题) Some scientists think that one day animals may be trained to do a number of simple jobs that are now done by human beings. Perhaps you have seen some animals doing quite skillful things at a circus. If you watch closely, you may notice that the trainer always gives the animal a piece of candy or a piece of fruit as a reward. The scientists say that many different animals may be trained to do a number of jobs if they know they will get a reward for doing them. Of course, as we know, dogs can be used to guard a house, and soldiers both old and modern times have used geese to give warning by making a lot of noise when a stranger or an enemy comes near. But it may be possible to train animals to work in factories. Birds with good eyesight are being used to watch out for fault in small steel balls that are being made in one factory. Apes have been used in America in helping to make cars and scientists believe that these large monkeys may be trained one day to gather crops and even drive trains. What made scientists think that animals can be trained to for us one day ?( ) (本题4.0分)
- Some scientists warn that the X-ray _________ (scan) now being used to screen passengers at many airports may be harmful to the human body.
- The practice at Imperial College, London proves that some scientists’ fears of focusing too much communication are ______.
- Which of the following statement is true?____. A: The ability to use language separates human beings B: We can be certain that animals have a culture too C: Social scientists doubt if animals have a culture too D: Some traditional ideas about the difference between human beings and animals may be wrong